Okay, I've got the '07 tails wired in, but I have no turn signals or brake lights. The parking lights and reverse lights are working, but nothing else.

I tapped into the factory trailer harness for the turn signals, but I've got nothing. There is a heavy gauge Black wire (ground I'm assuming), a heavy gauge Brown wire (hot?), and lighter gauge Green and a lighter gauge Yellow wires that I'm pretty sure are the turn signal wires.

Am I missing something, or did I royally screw the pooch on this?

 

did you follow the how-to to a T?

 

he has a 98-99, all you have todo is run wires from the gray plug upto the tails.

when i did joes truck i just ran one black wire to each light, cut the stock wire and then used some shrink wrap and butt connectors.

im not sure about the wire colors, it should be the normal trailer wiring colors.
get a test light and figure it out.

 

the green and brown wires are the left and right turn/brake light wires and the black is the ground.

 

So on the trailer harness the green is left and the brown is right? That's odd, I figured the brown would've been something else since it is so much thicker than the green and yellow wires.

 

Here's how I would wire 07 tails to a 98.

Parking/running lights:
98: Brown or brown/white
07: Gray

Reverse lights:
98: black/pink
07: brown/yellow

Left turn/brake:
98: Yellow (trailer harness)
07: Purple

Right turn/brake
98: Green (trailer harness)
07: Yellow

Ground
98: Black
07: Black/yellow

 

Thanks Bob. I'll try it again tomorrow.

 

yea...was gonna say. brown is tail, yel left, grn right, black ground for trailer wires.

 

Okay, I'm a moron. Blown fuses are bad...

 

thats okay it happens to the best of us