Brake lights wont work...

shan rose

New member
May 11, 2009
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Any ideas? In thinking the BOO switch
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
 
> Any ideas? In thinking the BOO switch

Actually the rear signals dont work either. Bad chassis ground??
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
 
> > Any ideas? In thinking the BOO switch
>
> Actually the rear signals dont work either. Bad chassis ground??

Duce,

If you mean the rear turn signals, they are the same filament as the brake lights.....

If it were just a bad chassis ground, things back there would work badly or strangely because the light assemble would be grounded through the marker
light filaments to the front frame.

I suggest that you get out the chassis wiring diagrams and carefully diagnose the system.
All of those signals (brake and turn) go through the turn signal switch and that has a major junction down on the steering column. If things aren't
good there, they won't be good any where.

Matt
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Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
What other rear lights are out? Tail, clearance, License plate light? Turn signals are the same filaments as brake lights. I assume that you
checked the fuse.
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Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
Exercise the 4 way flasher switch. It has to go through there to get to the rear.
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John Lebetski
Woodstock, IL
77 Eleganza II
 
Clearance lights still work wheres the fuse looking over the wiring diagram cant find it :-/
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
 
Look at the wiring diagram on the left side fOr "Directional Signal Haz and stop". It shows a 20 amp fuse feeding all of that. The fuse is located
inside the glove compartmment behind a steel plate held in with one screw.
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Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana