Quote:
Originally Posted by chevydog66
Hooked mine up on my 72 GMC with 01 6.0 dbc but its not working. I have led taillights. What do I need to check ?
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You need to put some sort of load on the circuit. On the brake switch there is an orange wire and a white wire. The orange is constant hot, the white gets power when the brakes are applied. Try hooking a light bulb on the white wire with the other side grounded and see if it works. The light will come on when the brakes are applied if you hook it up right. The bulb needs to be something like an 1157 or close, a peanut bulb like in the dash won't cut it.
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