Quote:
Originally Posted by GTOger
Quick survey. How many brake light switches does (should) a 1990 ZR-1 have?
1) one
2) two
3) other
I'm asking because my brake lights quit. So I ordered a brake light switch, removed the hush panel, became a contortionist and then found there are two under there.
One's white, the other black. The white one has the electrical and vacuum connections, but there is nothing plugged into the electric. Only the vacuum line is connected. The black one has a connector with blue & gray wires.
Huh? Did someone "customize" it? Or is that what I'm supposed to see?
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TWO switches: (
Ref Electrical section; pp 8A-110-0 & 8A-110-1 )
Battery power passes through the STOP/HAZARD
(20A) fuse to a
green wire that connects to the brake pedal switch (
also to a capacitor wired in parallel to the switch, but forget that for now).
Two wires leave the pedal switch:
the lite
green powers the 3rd (high) brake light, AND too a branch goes to the ANTILOCK circuit.
the
white wire connects to the
HAZARD/BRAKE switch and normally routes power from the brake pedal switch to the brake lights (unless the HAZARD mode is selected)
From there, power is routed from the HAZARD/BRAKE switch
via dark green wires to the stop/hazard/turn bulbs. From the bulbs, a black wire is connects to the the ground lug
G401 (
ref 8A-14-11): be sure that ground connection is good (or nothing works!).
So... Trace the path (in the FSM) and repair whatever component is NOT functioning (much preferred to "changing parts until the problem goes away").
