There is a semiconductor behind the fuel gauge on your console. This measures
the voltage from the fuel sender in the tank. When it reaches a set point it
goes [to ground if I remember correctly] which allows the bulb on the lower
left of your speedometer clcuster to come on indicating low fuel.
I never got this thing to work after it burned out a few years back [I've had
my '68 for 36 years]. A replacement semiconductor is available from 'Rick's
First Generation' in Georgia but for such a simple device it is NOT cheap!
I will fix this someday using a simple zener diode but I have other problems
with higher priority.
I got the wiring figured out the problem now is the module won't fit in
place.the light bulb(not sure what it's for) hits the tubing on the back of
the oil pressure gauge.Not the tube from the motor the one that connects to
the needle. Is the light required and whats it for?The gauges are NOS and
the base is a repo not that I think thats the problem.Thanks Bruce
From what I remember you are not supposed to put a light bulb in the
module's receptacle. That receptacle was used for other GM car but, if I
remember correctly, you could damage the module by powering it with a bulb
installed. You're supposed to click the module into the console gauge
carrier without a light bulb. Can anyone else confirm this?
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