my newly bought 98 cr-v ex all wheel drive and 96000 miles, has no infomation with it. i need to know the following. without pulling the radio how do i get the numbers needed to unlock it from err 3?what is my engine size? what is my fuel tank size?what fits in the cubby hole in the back door with the 2 straps? what is the purpose of the 4 "d" rings in the rear floor? why would there be a 12 volt plug in the rear cargo area? how do i connect my nav system which has a vss wire that needs to be connected to a speed sensor which i thinks this suv has none? how do i know if the all wheel drive system is on or off? i read the differance between the front and rear tires in tire diameter with a tread size differance of 2/32 inch will activate it. when i bought this the dealer put on 2 new rear tires and the front ones are worn. will this decrease my fuel milage when the all wheel drive is on? and wear out the fluid driving the system? sorry this is so long but i wanted to ask everything at once.