Tow vehicle electrcal hookup
I am having a problem with the trailer electrical plug on my 2006 mountain aire 4304. I thought it was a bad pigtail I used when hauling the jeep. Replaced the plug, couldn't get it to work properly,...
Forum Discussion
I am assuming you have a seven pin or blade connector, each of those contacts has a specific location in the connector and a color wire schedule, not all installers use the proper colors so after getting the schematic of the vehicle connector you can start looking for the problem.
After verifying the fuses are good, you can start trouble shooting.
There is one contact that is chassis ground and six 12vdc outputs. If your test light is like most you have a wire with a clamp and a probe on the other end, connect the clamp to a known chassis ground, turn on the one of the flashers and see if the correct contact is hot. If it is, move the clamp to the assigned location of the chassis ground in the connector(you may have to use a nail held by the clamp to make contact with the connector). If it lights up, you know your chassis ground and the flasher is good.
Go back to the clamp on a good chassis ground and check all the contacts in order going around from the common pin either clockwise or counterclockwise.
If the assigned pin for the Taillights does not have power, check the back of the socket to make sure the contact screw is tight and the wire is not broken. This may require removing the socket from the RV.
If the wire and the holding screw or good but no power, follow the wire back to where the wire loom "Y"s off from the other lights and check there. Often there is a wire loom from the chassis to rear and a point where the taillights wire is connected to the taillights themselves. It's impossible to say how it's done unless you have a good schematic from the RV manufacturer, you just have to look for the taillight wire connection point.
If the wires follow a color code, it is easier for you but most likely they will all be one color except for the chassis ground.
Good luck and just disturb as little as possible and replace the loom cover as you finish with each check point.
After verifying the fuses are good, you can start trouble shooting.
There is one contact that is chassis ground and six 12vdc outputs. If your test light is like most you have a wire with a clamp and a probe on the other end, connect the clamp to a known chassis ground, turn on the one of the flashers and see if the correct contact is hot. If it is, move the clamp to the assigned location of the chassis ground in the connector(you may have to use a nail held by the clamp to make contact with the connector). If it lights up, you know your chassis ground and the flasher is good.
Go back to the clamp on a good chassis ground and check all the contacts in order going around from the common pin either clockwise or counterclockwise.
If the assigned pin for the Taillights does not have power, check the back of the socket to make sure the contact screw is tight and the wire is not broken. This may require removing the socket from the RV.
If the wire and the holding screw or good but no power, follow the wire back to where the wire loom "Y"s off from the other lights and check there. Often there is a wire loom from the chassis to rear and a point where the taillights wire is connected to the taillights themselves. It's impossible to say how it's done unless you have a good schematic from the RV manufacturer, you just have to look for the taillight wire connection point.
If the wires follow a color code, it is easier for you but most likely they will all be one color except for the chassis ground.
Good luck and just disturb as little as possible and replace the loom cover as you finish with each check point.
