I just got a letter from Hummer about the brake controller wiring being different between GM 02 and the 03.
It states that the 03 has a different wiring harness (#15085418) and that
1. When your vehicle headlamps or park lamps are turned OFF:
Your electric trailer brakes may not apply when the vehicle brakes are applied.
2.. When your vehicle headlamps or park lamps are turned ON:
Your electric trailer brakes WILL apply WITHOUT the vehicle brakes being applied.
I've put the controller out of my 02 HD into both of my 03 HD P/U trucks and they work fine except the led lite is on when the headlamps are.
Does anyone have the new harness to compare to the old one or anybody have the wiring diagram for the H2 trailer brake connector so I can see what the difference is.
There are only 8 terminals so can't be much different.
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07 White H3 Adventure w/ some black stuff
04.5 GMC D/A CC SLT LB EFI LIVE tuned
98 ZR-2 Blazer
Ex H2&3 owner
My hiking boots and canoe paddle have more miles than most 'offroad' vehicles, over 350 in last year.
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06-29-2003, 06:33 AM
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