Abs light

Switch them back, that cable might be bad. If you have a volt meter you can ohm it to check for internal breaks.

 

Power to the abs is supplied by the center wire of your trailer cord with the key on.With the truck and trailer hooked up- turn the key on- the abs light should come on for 3 seconds, then go off, and you should hear a "chuff" of air at the trailer axles. If the abs light comes on each time you apply the brakes, the abs is being powered by the brake light circuit. This is a backup method to have abs braking in the event power is not being supplied constantly by the center wire of your trailer cord. If the abs light blinks with the right turn signal you have a short somewhere between the turn signal wire and the power to the abs system.

 

So with the new cable, the trailer abs light comes on whenever you use the turn signal but not the brakes, but doesn't stay on?

And the reason you switched pigtails in the first place was because the trailer's abs light was on to begin with?

Do I have all of that correct?

 

Ok, you really need to check and see if that center prong (blue wire) is providing a constant 12vdc when your key switch is on. So much for the turn signal issue, that seems like a possible short in the new pigtail.

If the center prong isn't providing 12vdc, then you'll need to check your trl abs relay and fuse.

If you have a light tester, use it to check that center prong for power with the key switch on. And then turn your truck off, and turn your hazards on and check that center prong again. If you get intermittent power that's synced with the flash of your hazards, then you have a brand new bad cable.

 

Alrighty, I'm done for the day so it shouldn't take me long to reply