| Author | Topic |
|---|
Location:
Melbourne, Australia
Registered:
March 2005
|
|
Aftermarket tachometer - Wiring ID by colour
|
Sun, 05 June 2005 17:44
|
 |
Hi,
I have an aftermarket tach for my car which was bought second-hand without wiring diagrams.
It has 4 wires, presumably +12V, signal, illumination, ground.
Colours are red, black, white and green.
I figure either white or black is earth. If black is earth I guess red would be +12V, but white is common for earth in the factory harnesses I've found, so if so power could be black, then the colours (red/green) for signal and illumination; not sure which way to go?
|
|
|
