Stupid question

The food not done yet. I ain't ate in 2 days.

 

It's one more thing that will eventually break, or worse yet, wiring that will rub through creating a system wide short where you have no lights. Every single thing you add to a truck is a thing that will require repairing at some point. Some things that add a real benefit are worth the trade off, other things that af no benefit are not.

Call it simple minded all you want. I prefer to keep things that add zero benefit off my trucks in order to not have to spend money and time fixing them.

 

I've been around a long time, longer than I should've been. I can tell you this, I prefer most things to be mechanical. Why, because I can work on it myself, can diagnose the problem myself, parts are a lot cheaper, and they will hold up a LOT longer than most anything electrical, that's a fact.

Most things today do not need to be electrical, it's just people want to turn the key and have an electrical device check out everything for them all at once. It's all good, usually, when new, but give it a little time, out of the blue, there you are, broke down on the side of the road because of some ICBM, ICM, Flux Capacitor, etc, etc, decided to crap out = a bad day.

The fact is boys & girls, things electrical do not like extreme heat, cold, water, salt, ozone, smoke, drivers breath, or most anything found in our working environment.

I will say this in defense of electronics, when points & condenser were replaced with electronics, now that was a good thing, truck on.....

 

I am bad about doing the same, but it only works off the trailer brake light switch, and could still not be working when you use the foot valve.

true enough, on the tractor, not true at all on the trailer, the reason trailers have at least 2 lights per side.

 

Your trailer stop/turn lights have more than 3 wires at the light?

 

Nope, 3 wires, BUT, the brake functions on one set of lights while the turn signals function on the other set. they do not all work on the same light, except on the tractor.
The red wire on the pigtail is for brake or turn signals on a trailer, not both.

 

My current trailer which I haven't done anything to the factory wiring, has 2 on each side. the outside is tail stop and turn, the inside is tail/stop.
When you say pig tail do you mean the 3 wire plug at the light? Or the 7 pin plug at the front of the trailer? Up front they are separate. Near the back of the trailer is junction box of sorts that the harness goes into, before splitting to the tail/stop lights.

 

Sounds like you may have a one of a kind. It may be possible that brand new ones could be wired like that, but then a 2 year old truck would not be able to pull them, because the 7 way is NOT wired like that. ON the 7 way, the red is the brake wire, the yellow and green are the turn signals, you can NOT hook both to one bulb, period.

 

My trailer is a 2013.