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Old 10-13-2013, 12:54 PM   #1
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Wiring LED 3rd brake light into Newmar Mountain Aire

Trying to wire an aftermarket LED 3rd brake light into the rear of a 1999 Newmar Mountain Aire 38ft class A. The LED light came with no wiring instructions and has black/white/green/yellow wire leads. All lights on the LED are red in color. It is supposed to be a stop/turn/headlight version. Can someone please tell me which wires go where on this LED light bar?

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Old 10-13-2013, 05:09 PM   #2
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I do not know,but my best guess is:
Black= +12volt
White= Ground
Green= Right brake light +
Yellow= Left brake light +
The center stop light should only work when both left and right
stop light are on.
You can try this out using a 9 Volt battery on your kitchen table and see
if this works.

Siggy & Ursula.
2011 Newmar DSDP 4020 (no Tag, no DEF, 07 emission),
FTL XCR ,ISL 400,2015 Jeep Cherokee Limited, 4x4, V6, Active Drive II, BrakeBuddy
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Old 10-13-2013, 08:32 PM   #3
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Generally the black is always ground in a VDC system. White would be the positive side.
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Old 10-14-2013, 04:35 PM   #4
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I agree that black is usually the ground, (negative), in a 12V vehicle. And, I would think that the wire that lights up the third brake light would come from the brake light switch.
How many wires are on your 3rd brake light?
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Old 10-15-2013, 08:52 AM   #5
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Well we guessed them correctly. Thanks for the advice! The black was 12v, white was ground.
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brake, newmar, wiring

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