Body computer behind glove box is not orginal. Had a no bus show up in milages Gage on dash after setting for few years and and replaced engin. Mice had nest above computer , inspecet all wires under dash and rest of truck. Could not find one for RT but got one out of SLT v8 same year. No bus went away and gages started working. Some things don't work right like, dinger for lights on or key left in does not work, door lock dose not work, by button or remote, and break light flashes all the time even when shut off and keys are gone. Can I order a after market body computer. My question is will this solve all these problems. Seen one for aRT awhile back for $400. Thought this a little high. Been dealing with this problem for some time. What can I do?