[amgarb]

I've read all 12 of these pages but many of the links and pictures are dead and gone.

I bought an ebay tachometer like the one pictured directly above but the wiring description for mine a a bit vague and I'm hoping to get a bit of help.

I have 5 wires and here is how I think they get connected:

1. Long Red for light +
2. Long Black for light -

3. Short green - ground
4. Short black - power to tach
5. Short yellow - signal

So I thing the long red and short black can be connected to power at the horn.

Then I connect the long black and the green to the frame some place.

Finally, hook the yellow wire to the coil but I'm not sure which side.

Can anyone advise?

Thanks!