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Trailer wiring question?
The car is brand new same with trailer ... the trailer lights were working when friend delivered home for me when i bought it at store .... i took the car to have a brand new hitch and wiring installed.... after it was done took the car home hooked up the new trailer lights didnt work on trailer or car... took it back to the place to get harness replace 2 times im still having the same issue i finally whent back for 5th time .. they hooked
up one of their smaller trailer and it didnt work at first after 2 tries and then it suddenly worked... i take car back home and hooked my trailer up to it no lights nothing on car or trailer it blinks 1 time thats it.. but when i unplug the trailer from car the car lights work fine........ the wiring used was hard wire 4 pin flat just straight wiring .. my question is since their trailer was smaller is that why the lights worked..... im just confused... could it be the straight wiring harness cant handle the cars power
2015 challenger
Please hopefully someone can help me thst can direct me to how i can fix this
4 Answers
- Coffee DrinkerLv 75 years ago
The horsepower of the car's engine and the size of the trailer are irrelevant.
The flat 4 wire plug is pretty much universal for a basic trailer tail light set up.
I would start by asking a friend or neighbor to hook your trailer to their car. If the trailer lights work perfectly on another car then you know there's no problem with the trailer and the problem is with the wires on your car. If the trailer lights don't work then you can be pretty sure the problem is the trailer if the car you use works with other trailers.
Frankly if you're certain that the problem is the car then its time to demand a refund and take the car to another shop for wiring. Professionals who install hitches should get the wiring right the first time 999 times out of 1,000. If you happen to be that one in a thousand time that they goof up and make a mistake they should get it right the first time you come back and compensate you for your time & hassle by refunding your original fee.
- realtor.sailorLv 75 years ago
Buy an inexpensive multi meter and check the voltage at the harness with brake depressed and tail lights on. If you have power there then check the ground on the trailer. You shouldn't depend on the hitch acting as a ground. There should be a wire from the trailer's side of the harness to ground on the trailer.
- J JLv 75 years ago
May I suggest you take the trailer and the car to the people that did the wiring. There is to many different things you say for me to help you here. I'm not even sure if your talking about the clearance lights, brake lights or the turn signals.
