Hopkins Custom Fit Vehicle Wiring - Trailer Hitch Wiring - HM11143674 Review Video

You have what is called a wishbone harness like #A20WB. This type of harness take the running light circuit and splits it at the trailer connector so that you do not have to run a jumper wire from one tail light to the other. The yellow/brown wire is…

What you are describing is normally the result one 1 of 3 issues: First, there could be some corrosion in or on the connectors on the vehicle or trailer side or both. Second there could be a bad ground. Bad grounds can cause all sorts of bizarre…

Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which…

If both turn signals blinking at the same time is a new problem that has occurred after the harness had worked fine before, there are a couple of possibilities that may be causing the issue. First, the easiest thing to check are the trailer…

Instead of extending the black wire from the 7-Way plug in 7-way upgrade kit part #ETBC7 to the battery under the hood you would extend the black wire from the plug to the positive side of the battery in the back of the vehicle with a 40 amp circuit…

For the most reliable and safe connection possible, Curt recommends obtaining the power for the controller directly from the vehicle battery and running the circuit through a 30 amp breaker like what's provided with the #ETBC7. This way, you can…

Sounds like the harness is getting overdrawn by your trailer wiring which is shorting it out and causing it to fail and then also causing the lights on the vehicle to stay on. Does the trailer have a lot of lights on it? We don't have the best…

Congratulations on the new trailer! I looked up your new 2021 Jayco 154BH travel trailer, and it has a Gross Vehicle Weight Rating (GVWR) of 3450lbs. Your 2015 Nissan Quest has a maximum towing capacity of 3500lbs, which matches the Curt Trailer…

We do have a video showing installation of a different brand wiring harness on a 2015 Nissan Quest that should help. I have included a link to it for you. Our installer also had a little trouble with the tail light assembly and it is covered very…