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Old Oct 18, 2015 | 02:07 PM
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I need help

Okay guys and gals. I have a 1978 ford f150 custom with a flat bed. We have only brake lights but nothing else in the back. We are looking for the housings for the back lights.
 
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Old Oct 18, 2015 | 02:13 PM
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Those are just farm store tractor or trailer lights, you should be able to get a new set for cheap if the housing is broken
 
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Old Oct 18, 2015 | 02:14 PM
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The wiring coming out of the housing I have one dead wire but other two wires are live. Any ideas?
 
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Old Oct 18, 2015 | 02:15 PM
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Correction now all wires live but burning up all the bulbs.
 
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Old Oct 18, 2015 | 02:15 PM
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Before you start cutting and splicing, do either of the lights work at the moment?
 
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Old Oct 18, 2015 | 02:17 PM
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Originally only brake lights but as soon as he got all lights to work it burned up all the bulbs.
 
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Old Oct 18, 2015 | 02:24 PM
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By process of elimination, the last wires you hooked up had a short issue, trace them back to both ends checking for bare spots
 
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Old Oct 18, 2015 | 02:27 PM
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Thanks Mark!
 
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Old Oct 18, 2015 | 05:29 PM
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X2 on they are just trailer lights assemblies that you buy at Walmart or any farm and ranch store if you just have to replace them due to a faulty bulb housing.

Ck fuses, ck all the wiring down the inside of the dvrs side frame rail for wear, chaff, rub, burn from exhaust, rat chew marks. Blowing fuses/bulbs is a sign of a "short" (hot wire that is getting grounded) in the wiring. Look at the brake switch wiring under the dash and all the way back.

Here's what the factory wiring diagram says: for rear lights
Blk/rd= backup lights
Black= side marker, tag lights (on styleside)
Brown=tail lights, tag light (on flareside)
green= RH stop and brake
Yellow/blk= LH stop and brake

Rear light wiring
BROWN: running light circuit
YELLOW with BLACK stripe: driver-side stop/turn
GREEN: passenger-side stop/turn
BLACK with RED stripe: backup lamps

73 & 79 headlight-marker lights use same color codes
Brown= side marker and parking lights
White-blue trace= turn signal
Red-black trace= Low beams
Green-black trace= Hi beams
Black=ground

Flat bed wiring…
Brown= Run Light
Green= Brake light- L
Yellow= Brake Light- R
Black= Reverse Light??
Just wired my front lights. The brown wire is the marker light (side and turn) it is also the top wire on the turn signal socket (three wires in a triangle). The black is ground of course. The white/blue it the turn signal.
 
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Old Oct 18, 2015 | 06:08 PM
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Also great advice here. https://www.ford-trucks.com/forums/1...ml#post1812190
 
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