2 replies to this topic

[chargersjoe]

Hi all,

I have attempted to wire a TIM tachometer to my 1990 Studio 2 with little joy and wondered if anyone could help.

I have successfully managed to illuminate the tachometer via the flex circuit on the back of the clocks.

I cannot however get a reading on the tachometer. I have tried various ways of connecting to the coil and at best only got a slight flicker of the needle. At one point, earthing the tach caused the car to cut out.

Any info as to what I should be doing as I cannot seem to work out which side of the coil is -ve due to the fact that each side has a wire running down to the dizzy.

Any help would be much appreciated.

Thanks,
Joe

[dklawson]

Temporarily fit the tachometer under the bonnet instead of trying to tap into the existing wiring harness.

As a test only, connect the TIM Red wire to a source for constant 12V. The solenoid terminal with all the brown wires will be "hot" all the time with +12V. Connect the green sensing wire to the coil (-) terminal... the coil terminal with the wire going to the distributor. Start the engine and touch the black TIM wire to a bare metal earthing spot on the engine (a clean bolt or similar). The tach should spring to life. If it doesn't, or if the engine dies on you, this is an indication that the tachometer is defective. Killing the engine would indicate that there is a short circuit inside the tachometer.

[chargersjoe]

Just tested it and all is now working perfectly Thanks DK.

Now to find a good place to mount the pod...