SOURCE: i can't seem to find the wiring harness for the truck
mabe behind plastic cover on inside kickpanel
SOURCE: well i was told its a ground problem meaning it
If you mean you lose your revers from time to time, you can check the wire harness connection on the passenger side of the transmission around where the Catalytic Converter is at. Inspect for any loose or damaged connections or wire from corrosion or heat from the catalytic converter.
The other cause of no revers is “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission additive or other seal restorer product. May also have worn boost valve (can replace in the pan).
Put a line pressure gauge (or visit a local trans shop) on the pressure test port and go for a drive to verify proper line pressure. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. If base pressure is low, trans or pump is worn out. If max pressure is low, check EPC solenoid. If reverse is slow to engage, and line pressure does not come up to at least 130psi in reverse, replace the boost valve with a Transgo 0.490" boost valve (easy fix in pan).
Good luck and hope it's just a loose connection that can be cleaned with brake parts cleaner and reattached if no damage is found to the terminals and wire leads. Thank you for using Fixya
SOURCE: I need to connect a four-wire plug to the trailer
I suggest check this diagram...
Also can visit this link for additional details: etrailer.com/faq-wiring
Hope helps.
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