Running lights on all the time

[THerman]

Has anyone else seen this?



My running lights are on at all times... . The wiring is correct. Factory installed harness. Verified it with several different plugs in it.

Testing the receptacle on the truck, works fine.

Retested a known good adapter. On all time... . wiggled adapter and could get correct opperation.



Seems to me like a short between the +12v contact and the running light contact when a plug is plugged in.



Nothing visible from the receptacle end that would explain it.



Has anyone had their factory receptacle go wacko on them?



THanks for the help.



Tod

 

[RustyJC]

Here's a possibility. The continuity light on my Jordan brake controller was glowing dimly when no trailer was connected! I disassembled the factory 7-pin connector and the harness plug that goes into it (on 2002 models) and found both full of water and crud. After cleaning both out with WD-40 and packing them with dielectric grease, no more problems. The garbage in the connector and/or plug was creating a high resistance short between the pins.



You might want to check this out in yours. The same thing would happen, as you say, if +12VDC were shorting to the running light pin.



Rusty

 

[THerman]

Thanks Rustyjc,



I'll check that out.



Any other ideas out there? It sure is a pain to have to unplug the trailer to make sure my battery doesn't run down!

 

[clem]

If your plugs are clean, make sure you have not switched your charge line and the running lights wire. Not hard to do I know done it before. good luck