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Aftermarket Brake Controller Into Gmt900

revrnd

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revrnd Senior Enthusiast

revrnd

Posted
Posted

I'm waiting for replies from Tekonsha & GM of Canada about the connections for the brake controller harness.

 

The Tekonsha P3 harness has the following 4 wires:

 

black

 

white

 

red

 

blue

 

Apparently the OEM "blunt cut" pigtail has 5 wires:

 

White

 

red

 

blue

 

orange

 

blue/white

 

Can anyone positively tell me which wires on the brake controller harness connect to the proper wires on the under dash harness?

 

The reason I'm asking is that a friend just had a brake controller installed & the wiring got screwed up. He hasn't been back yet to get it rectified. So I can't check his truck.

07gregLT1 Enthusiast

07gregLT1

Posted
Posted
I'm waiting for replies from Tekonsha & GM of Canada about the connections for the brake controller harness.

 

The Tekonsha P3 harness has the following 4 wires:

 

black

 

white

 

red

 

blue

 

Apparently the OEM "blunt cut" pigtail has 5 wires:

 

White

 

red

 

blue

 

orange

 

blue/white

 

Can anyone positively tell me which wires on the brake controller harness connect to the proper wires on the under dash harness?

 

The reason I'm asking is that a friend just had a brake controller installed & the wiring got screwed up. He hasn't been back yet to get it rectified. So I can't check his truck.

 

on page 2 is a PDF in the HOW TO SECTION at the bottom of the forum.

 

http://www.gm-trucks.com/forums/index.php?showtopic=68309

 

im guessing the HDF's arent different, if much at all, in this case.

 

the orange wire is not used, just taped off and put to the side. not all colors match up with the matching colored line, the PDF has a diagram.

revrnd Senior Enthusiast

revrnd

Posted
  • Author
Posted

That's a great PDF! I had posted on a RV website & I was linked to a Youtube video. Guy just kind of breezed thru the wiring connections, so I wasn't any further ahead by watching it.

 

I'll print it off when I go to install the P3.

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