The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - No Tail Lights or Rear Side Marker Lights

**pjmoreland** · 02-20-2022, 05:54 PM

I believe the two tan wires visible in the photo of your ignition switch are for the brake warn light. One goes to the master cylinder, and the other goes to the light. The ignition switch connects the wires to ground when cranking the engine.

02-20-2022, 05:54 PM	#16
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,330	Re: No Tail Lights or Rear Side Marker Lights I believe the two tan wires visible in the photo of your ignition switch are for the brake warn light. One goes to the master cylinder, and the other goes to the light. The ignition switch connects the wires to ground when cranking the engine.