Micheal/Derek
Well since the tacho had now been tested and proven to work, I then started to fault find the wiring!
1 Checked for 12 volt on the plug of the tacho
2 Made sure all the earths were ok on the plug as well.
3 lucky last checked for negative pulse from the distributor....was open circuit.
So I ran another lead back from the coil to the back of the tacho and it came to life!
There was so many old wires next to the coil I just ran a new cable!
Problem solved.
Dennis
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