7pin wiring problem. Please help!
I have a new to me travel trailer. I am having a few issues with the wiring. Let me list those and then I'll list what I have done so far. 1. When headlights are on, running lights are not. 2. Whe...
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You are trying to fix too many problems at the same time. You will just get confused.
Go back to the left tail light. Turn on the tow vehicle running light. If your test light comes on by touching the socket pin or the wire going into the bulb while using the long wire as suggested as a ground then you have power that far back to that light. Forget the right side for now.
Then put the test light on the other wires of the bulb/socket. IF the test light comes on when touching what seems to be both sides of the bulb then your ground is missing for that bulb.
Remove the bulb, use your test light to find which wire lights up the test light. Put the bulb back in and then use a needle to pierce the wire that did NOT light up the test light. Connect your temporary ground wire there and the bulb should light up. If there are more than one wire that is ok. Probably one is the turn signal.Just pierce the ones that did NOT light up the test light.
Ok, once that simple circuit is diagnosed you can start working on the left turn signal. It is usually just the other wire and should flash your test light when touched.
If these simple tests fail you have a problem between the socket and pigtail. I think you can sort it quickly if you break it down to a couple of basic tests.
If you use a substitute battery you may chase your tail, lights that is.
What you are doing is substituting a
Go back to the left tail light. Turn on the tow vehicle running light. If your test light comes on by touching the socket pin or the wire going into the bulb while using the long wire as suggested as a ground then you have power that far back to that light. Forget the right side for now.
Then put the test light on the other wires of the bulb/socket. IF the test light comes on when touching what seems to be both sides of the bulb then your ground is missing for that bulb.
Remove the bulb, use your test light to find which wire lights up the test light. Put the bulb back in and then use a needle to pierce the wire that did NOT light up the test light. Connect your temporary ground wire there and the bulb should light up. If there are more than one wire that is ok. Probably one is the turn signal.Just pierce the ones that did NOT light up the test light.
Ok, once that simple circuit is diagnosed you can start working on the left turn signal. It is usually just the other wire and should flash your test light when touched.
If these simple tests fail you have a problem between the socket and pigtail. I think you can sort it quickly if you break it down to a couple of basic tests.
If you use a substitute battery you may chase your tail, lights that is.
What you are doing is substituting a
