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Honda Odyssey Towing/Trailer Hitch Questions

hgoettmahgoettma Posts: 3
DIY (05-07) TRAILER HITCH WIRING INSTRUCTIONS

The hitch wiring for 3rd generation Odyssey is supposed to be a simple plug and play connection, like it is on the 2nd generation Odyssey since Drawtite provides a direct connect wiring kit (#118336).
However, despite the 3rd generation being on the market for 2+ years, I could not find any hitch manufacturer offering a direct connect kit (2nd and 3rd generations use a different factory installed connector). The only options currently available are;
1) purchase Honda wiring kit ($180). This is powered unit (draws car battery power to power trailers with lots of lights)
2) splice a generic wiring kit (like Drawtite 18130) into taillight harness
3) build custom connection to plug into factory provided hitch connector

Here is Do It Yourself instructions for option #3

Overview:
I could not find a commercial connector that would plug into the factory provided connector. However, the individual pins on the factor provided connector are the same as on the 99-04 Odyssey (about 0.080” wide). A spade lug will fit on these pins (most are 0.250” wide), the smallest commercial spade lug available is 0.110” wide, and will fit snuggly.

Parts;
1) generic wiring kit (like Drawtite 18130, or 99-04 Odyssey custom kit 118336)
2) 5 spade lugs (0.110” wide)
3) heat shrink tubing (Radio Shack)
4) 2 tie wraps (Radio Shack, Home Depot)

Preparation;
1) crimp the above spade lugs to car end of wire kit
2) for extra protection apply a small piece of heat shrink tubing to exposed section of spade lugs

Assembly; (about 1 hr)
1) Pull out the weather-strip at the rear trim panel (fig 1)
2) Remove the 2 anchor bolts (cargo net holder) from panel in 3rd row seat well (fig 1)
3) Lift to release the 10 clips (fig 1)
4) Pull out the weather-strip at the passenger side rear side trim panel (fig 2)
5) Remove the anchor bolt near the top of the side panel (fig 2)
6) Gently pull out on the rear side panel to release the two clips (fig 2)
7) Gently pull out the rear side panel (fig 3)
8) Connect 5 wires to junction box trailer wire connector port (fig 4)
9) Secure trailer wire kit to existing harness with tie wraps
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Comments

  • hgoettmahgoettma Posts: 3
    Dont see a way to attach file with pics and schematics, so here is pin-out for wire kit (fig 4)

    Looking into rear junction box trailer port
    ___________________
    __....................__
    a ....................b

    __ ..__ ..__ .. __.. __
    _1__2___3___4___5__

    pin function wire kit
    a gnd white

    b left yellow

    1 right green

    3 brake red

    4 tail brown
  • Karen_CMKaren_CM Posts: 5,018
    This would be a great guide! Click on "Guides" at the top of the page to start creating. If you need help, just holler! :shades:

    Community Manager If you have any questions or concerns about the Forums, send me an email, karen@edmunds.com, or click on my screen name to send a personal message.

  • amstaramstar Posts: 1
    Would you be willing to share the photos mentioned in your instructions? Please send the photos to van.t.cherryblossom@xoxy.net. Much appreciated.
  • I think you are referring to 0.11" push connectors, not spade connectors - correct?
  • hgoettmahgoettma Posts: 3
    Yes, 0.11" push (female) type conectors
  • Hello Folks:

    I did a search but could not find a concrete answer.

    I have an 07 Odyssey EX-L w/RES and thinking of purchasing personal watercrafts.

    First of all, will the Ody tow two Honda 3 seater turbo watercraft on a double trailer?

    Secondly, in what other should I add the towing acessories as reccomended by Honda? And do we really need a power steering cooler?

    Would love to hear from folks doing similar towing.

    PS: I just did a 3,500 mile tround trip DFW to SoCal trip. Van seems gutless at high speed and hills (but I came from a Ford Explosion and my daily driver is an EVO IX SE). Gas milage was around 24 mpg loaded with 4 kids, a Wife and luggage. By far the most comfortable vehicle for trips we've had. Thumbs up to the nav and dvd.
  • dohrmcdohrmc Posts: 14
    I often carry a 1980 Honda 110 Trail motorcycle on the back of my 2002 Ford Expedition. I can't even tell the bike is back there. I am thinking of replacing the Expedition with a minivan in search of better mileage. Does anyone have any experience using a hitch carrier like this? I don't know if the Odyssey can hack hauling an [approx.] 190-200# bike on a hitch. It will have to be a Class III hitch to fit my equipment. Any of you use a hitch on your Honda like this?
  • trmctrmc Posts: 7
    Has anyone self installed the full tow package (hitch, harness, ATF, power steering fluid cooler, air deflector)? Was it hard? How long did it take? Thanks for any tips.
  • I'm looking for a Class III (for 2-inch square drawbar) that fits tight to underside of bumper. Have tried Curt 13561 but sits 1-1/2 inch below bumper cover. Having had similar on a 2000 Ody, it occassionally dragged on driveway entries even with no load.
    I fear web photos from mfrs are not necessarily accurate, so seek your experience.
    A note on Curt - is good design with sealed tube. My trial unit had mis-located right front mounting hole, too close to edge of bracket to re-dril without breaking through. A pro shop could bend it, but that responsibility I will not take.
    Thanks.
  • Hitch is a snap - try-fit it first for accurate hole location (see my posting today re Curt). Pull off the rear exhaust hangar (bar pulls out of lower rubber mount hole), slide hitch in from the rear over exhaust, loosely insert one bolt in rear hole. Lift left side up, inesrt 3 bolts loosely. Finish right side. Torque to 68 ft-lb, or other if directed by hitch mfr.
    Get a T-One plug in wiring kit, even if more $$ than univeral style. 20 minutes. Go real easy prying up plastic trunk liner panels.
    If installing brake controller, you need to tap into the brake light switch wire over brake pedal (make sure you have the switched wire - not hot wire). Then you need to run a single wire from controller to your 6 or 7 pin socket, left side of car, tucking under carpet trim. Also tap into back-up light wiring in rear if wanted.
    No tranny cooler experience yet, but buy the biggest plate style you can - max capacity is best. I have no idea why we need steering fluid cooler Honda has in their towing package.
  • A pair of craft on a double should not need even a tranny cooler, (unless you do several hours at 80 mph in Arizona in mid-summer). Also, I have no idea why Honda suggest a PS cooler - we do not increase frequent steering action much with any trailer.
    Have pulled 3000 lb pop-up camper a few years with 2000 Ody - no coolers, no tranny probs, even though the 2000 was a tranny risk.
    I'm, now fitting up my new 2007, and looking for a close fitting Class III hitch - any ideas there? (see my other post today re Curt hitch).
  • just installed a round tube class 3 hitch by hidden hitch. easy to install. dont remove exhaust rubber ,just slide rt side above exhaust and then start bolts on lt side. one man job.hitch was 150 and wireing kit was 40. looks great.
  • I am planning to install a Hidden Hitch to my 2006 Odyssey. I have also ordered an E-trailer wiring harness since it was about a third of the factory trailer harness, and it is plug and play. What I do not like about the e-trailer harness is that they instruct you to simply hang the wire and plug out the rear hatch. I do not like the way this looks, and feel the wire will be cut over time.

    Looking at the factory trailer wire harness installation manual, they tell you to remove the rear bumper to access a grommet to run the wires through to get the trailer harness down to the trailer hitch. I would like to know if any of you know of a more accessible grommet that will allow me to run the wires to the trailer hitch without removing the rear bumper? Thank you for your help.
  • Just bought a 2008 EX-L DVD/NAV. Turned in my 2000 EX. I have been towing a small boat (16') for 1.5 years without the tranny cooler, power steering cooler, no probs. Two of my neighbors who pull smaller boats were told NOT installing a tranny/power steering cooler could void the warranty, they both did it, and are not sure if it was necessary. When purchasing the 08, they tried hard to sell the towing package, but it looks like a lot of fluff to me. However, considering the warranty void potential, I am rethinking the tranny/ps cooler only. Forget what they wanted for the hitch, I can have that done for 1/2 their cost, but the tranny/ps cooler is a different animal. Anybody heard of the warranty void statement, similar experience?
  • I installed a hidden hitch,round tube ref. 15 . honda wanted 238 for a tranny cooler. I got a large cooler ( hayden) at checkers for $50. installed for $100.Seems to be A ok.not worried about power steering cooler whats up with that ?
  • bernikenberniken Posts: 18
    I concur 100%. And good shopping. What could be the logic for recommending a PS cooler? Do we steer a lot more with a trailer? Maybe backing it into a difficult spot, but surely not much more than a tight parallel park on an ordinary day without the trailer. Now consider a good looking mesh grill in front of the coolers to minimize risk of stone punctures. I hear Honda does not honor claims for tranny cooler or AC condenser damage based on their inadequate grill protection.
  • I have an 8 month old 2007 ody and I turned down the tow package from the dealer. I didn't understand the need for the 2 coolers etc.
    (Everything purchased from etrailer) I bolted on a Hidden Hitch Class 3 round tube for 150.00 #70750 (discontinued),T-One Vehicle Wiring Harness 40.00 #118438, etc. The hitch was a breeze to install (easier w/ 2 people) the harness was a breeze (go easy removing the panels) Everything works great.
    I bought the Sears fold up utiltiy trailer hooked everything up and away I went. So far so good.
    I'll report back if problems occur.
  • bernikenberniken Posts: 18
    With your Sears fold-up utility trailer, I expect your loads to be light. Plus load will be low profile, adding little to drag. I would not expect a cooler to be needed at all. You probably do not need Class III either, but it is a good long term plan.
    My own trailer is 3000 lb Fleetwood pop-up camper I intend to haul accross continent & over mountains, close enough to the Honda 3500 lb limit that I will add a large Q tranny cooler, but pass on the PS cooler. Also adding a lower grille screen to protect the delicate stuff that Honda neglected (see other threads on this.) Thanks for your input, angrypear.
  • Exactly. The odd jobs. Small loads. If I get serious, then my equipment gets serious. Thanks for the comment.
  • carguy74carguy74 Posts: 18
    i just have a few things to mention to you guys that want to do it yourself on these hitch and tow packages...... i don't recommend using any after wiring of anykind. i have seen many problems with honda's comming into the shop with lights or body electrical not working because of after market wiring. you can do it yourself if you have the honda wiring kit.... alot of after market wiring system will fry the factory wiring. and as for the trans and ps cooler, you will need it to do the job if you plan to pull anything heavy for many years or for a long trip. what alot of people don't realize is that you need those coolers to cool the fluid when pulling heavy toys, especially if you pull for a long trip. you can't just hook up a hitch and lighting and expect to pull a 2000lb on up trailer or toy and not expect any wear on your fluid,trans and power steering system. and anyone who says aftermarket wirings don't hurt anything have no idea what they are talking about.....for example....aftermarket wiring splices into taillight wiring.....honda don't and that extra draw of power will eventually short or cause electrical problems... everything is made for a purpose....a brake bulb and wiring is only made to take on that amount of electrical load only....not extra loads.
  • I already had the idiot light for the airbag come on before wiring up for the trailer. (maybe Honda's wiring isn't that good to begin with anyway?) I guess if you don't follow the instructions provided something could go wrong. I didn't have to splice anything and a fuse was provided. The fuse was 7.5, if that amount causes trouble something really is wrong. It's after market but everthing provided was made for the purpose and well made.
  • Do you just stick the flat wire out under the hatch when you use the trailer or did you find a way to route it to the outside? I purchased the same wiring harness and was surprised when I read the instruction to "store in the jack compartment for future use."
  • bernikenberniken Posts: 18
    On my 2000, I had a wiring bundle that included the flat four, plus one conductor for electric trailer brakes and I added a heavier ground. I simply drilled a hole at a convenient spot in the rear face of the body steel behind the trim panel, cleaned up the burrs from the hole, rolled the wires into a circular bundle with numerous layers of electrical tape, and passed the pigtail through the hole. (A grommet might have been better, but I did not have one.) The winding of tape was thick enough to jam into the hole, forming a weather tight seal. It lasted me 7 years - no trouble. I mounted a 7-conductor trailer recepticle outside on the hitch tube beside the drawbar. I intend to route the wiring the same way when I do my 2007 next month.
  • Yes. I stick the wire under the hatch when I use the trailer and store it in the jack compartment when not in use. It's practical not professional.
  • windywwindyw Posts: 1
    Being a single mother with two kids, I need some advise from you about towing since my husband is deployed in Iraq. I have Odyssey 01 EX and I am going to move to other city (500 milles) with my two sons and also I am going to tow Uhaul trailer, based on my calculation the loaded trailer will be arround 1900 lbs. I got hitch class 2 installed by Uhaul and they said I don't need extra ATF cooler because there is already transmission cooler installed in my car, do you think it is right ? and I went to honda dealer, they said I need a better ATF cooler, and something that is funny, they suggest me to buy aftermarket ATF coller since honda doesn't make ATF cooler for Odyssey 01, do you think it is right?
    If I need really ATF cooler, what kind of cooler should I buy and where I can go to get the cooler installed? how much doest it cost ?
    Beside ATF cooler, do I need another kind of cooler in order to be safe towing 1900 lbs trailer?
    How long can I drive the car with trailer between the rest ?
    Thank you very much for your advise.
  • bernikenberniken Posts: 18
    Unless you are in very hilly country, and allow time to stay at 55 mph on the flat, and this is an occasional or one/time trip, don't waste your cash. Ensure engine oil, tranny oil and coolant are topped up and cruise easy. Stops are not needed, but when you do, park in a place you can see the car and pop the hood up to allow more cooling.
  • Thank you for your family's service.

    I would stick with Uhaul's advice. Your car is 8+ years old and you are making a 1 time trip and you have a transmission cooler. I would think your money would be better spent insuring the car was in shape for the trip - brakes,oil,air etc. Also, If you don't have experience towing loads like this I would talk to Uhaul about making this trip safely. For instance, backing up is an acquired skill. The only other cooler Honda offered was for the power steering. I make infrequent short trips with a lighter load so I don't have either cooler.

    I don't understand the last question.

    I had a 2000 Odyssey ex that never towed anything and the transmission died last summer. You can prepare for the worst and hope for the best, but nothing is guaranteed.
  • When I look up the towing capacity of the Odyssey, I find "3500 pounds." However, do you need a towing package installed to do this or do all they all tow 3500 right off the lot? I am looking at a 2008.

    Thanks! -Tony
  • Yes, you need a towing package.
  • kominskykominsky Posts: 850
    Honda recommends a tranny fluid cooler and a power steering fluid cooler for towing with your Ody. They make both.

    That said, I agree with others that for a one-time trip of 500 miles, you could probably get by without either. Not knowing the type of roads you'll be travelling, I would guess somewhere around a 9-10 hour trip if driven straight through. It probably wouldn't hurt to stop every couple of hours and give things a chance to cool down. Travelling with kids, frequent stops are almost a guarantee anyway. ;)

    BTW, "thank you!" to your husband for his service and your family for their sacrifice.
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