First Generation Firebird-L Mailing List
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The motor case should be grounded. The grommets reduce the vibrations
passed to the firewall.
If there were a short to ground between the switch and the motor, I
would expect the wipers to always be on, since the switch just grounds
the circuit.
Andy
Steve Powell wrote:
First Generation Firebird-L Mailing List
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As I recall there are rubber grommets for the wiper motor mount. If it is a
ground switch circuit as Stu indicates these would isolate the wiper motor
ground from the chassis ground. Make sure the motor case isn't contacting
the firewall by accident.
Steve
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Wipers work backwards from most circuits. There is always positive 12 volts
to the wiper motor as soon as the ignition is turned on. The switch then
creates the ground when turned on. It sounds as though there is a short to
ground somewhere before it gets to the wiper motor. Try unplugging all the
wiring at the wiper motor and see if it still blows the fuse. If so, there
is a short before the wiper motor, most likely where it passes through the
firewall.
Stu
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