How do the different color wires (brown, green, green/black, etc) connect to connections (G, symbol that looks like a 4 with extra short lines, etc) on back of gauge. Got car back from garage and needle stays at maximum of 140 regardless of rpms.
Don
-/-/-/-/-/
1970 Triple-Black 911T
2006 Red Cayman S
Brown is always ground, so goes to the terminal with the ground symbol. The various color wires always go to the 'G' terminal which stands for gauge,,,,not 'ground'. The power wire goes to the terminal with a '+' symbol.
Early S Registry member #90
R Gruppe member #138
Fort Worth Tx.
if in doubt, you can run a wire from the pressure switch directly to gauge.
Chris
703-e
There is no brown wire. All the wires are stripped like green with red stripes or green with reddish brown stripes. Must have had wires hooked up wrong. Burnt insulation off one wire and gauges stopped working. Anyone know where the fuse(s) for the gas, oil temp, oil level, and tach are?
Don
-/-/-/-/
1970 Triple-Black 911T
2006 Red Cayman S
There is no brown wire. All the wires are stripped like green with red stripes or green with reddish brown stripes. Must have had wires hooked up wrong. Burnt insulation off one wire and gauges stopped working. Anyone know where the fuse(s) for the gas, oil temp, oil level, and tach are?
Don
-/-/-/-/
1970 Triple-Black 911T
2006 Red Cayman S
Instruments are not fused.
Early S Registry member #90
R Gruppe member #138
Fort Worth Tx.
Well what explains the fact that the tach and oil temp/pressure/level gauges
don't work after I accidentally allowed a positive lead
to touch a ground post? Is it the gauges themselves?
The power leads to all the gauges is a "daisy chain" of wire that starts at one end and goes to all the gauge input connections by having two wires crimped into one connector to jump from one terminal to the next. you'll have to see how far down that chain is burned.
Early S Registry member #90
R Gruppe member #138
Fort Worth Tx.
Wouldn't this mean that just like many strings of xmas tree lights
if one is out the others further down the circuit would
also be out? Thus fixing the one that is not getting juice
would also fix the others?
No, unlike some tree lights the power feed wiring is a 'parallel' circuit. Just follow the power wires back to their starting point and use a volt meter to determine if you have power (voltage) to that point.
Early S Registry member #90
R Gruppe member #138
Fort Worth Tx.
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