Hi,
I'm just fitting a Smiths tacho that I got hold of but its not working.
It's one of the current sensing type I believe -
It's a 4/6/8 cylinder gauge and I've got it set to 4 cyl
It has three spade connectors marked the following:
Red - Positive
Black - Negative
Blue - Sensor
Red - Fuse connector 4. I want it to get power when the key is 'on'
Black - I've crossed over and am using the earth from my temperature sensor guage.
Blue - I have connected to the Negative side of the Coil. This is the side that goes into the dizzy. My car is negative earth.
It also has a spot for a bulb to plug in, which I haven't done yet & two posts for mounting. I'm not grounding the casing at all.
Any suggestions?
dewey