3RD Brake Light wiring for camper top

ezstriper · January 12, 2015

where can I connect the 3rd brake light wiring from a camper top ? everything I found at the rear is connected brake/turn signals, 2008 2500HD, thanks Rob

Blue2500CC · January 17, 2015

Should be a wire labeled "CMHS" or "CMHSL" taped up near the trailer plug wiring.

Think it is blue or light blue, been a while so don't remember 100%.

idnative1948 · January 29, 2015

Thanks Blue! I am going to finally get around to wiring my Century topper 3rd light. Have crawled under a couple of times looking, myself.

idnative1948 · February 4, 2015

UPDATE. I crawled under my '05 and there is one lone light blue wire. Seeing as how my Century Topper has two wires, am I correct in guessing that one of the two is ground?

Blue2500CC · February 5, 2015

Yes, one of the topper wires needs to be grounded.

idnative1948 · February 6, 2015

UPDATE- Topper now has lights, as in 3BL, interior light. Tied the 3BL into the blue CMHS wire, and the interior lamp into the brown clearance light wire, grounded to the inside of LH taillight area. Thanks again *Blue* for your expertise!