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Re: Need help wiring a tach
Forgot to add this...
It is tough to see in the photo but on the back of the box the left terminal with the black and red wire says "BAT -", the middle terminal with the brown wire says "P", and the right side terminal with the white wire says "BAT+". Going just on assumption it seems like the 2 existing wires would go to the posts on the tach, the BAT - and BAT + need leads from those obvious sources, and the P would have meant Points or the negative on the coil, thus the Tach output on a HEI distributor. This is purely assumption so I am asking in my desire not to blow up a very nice looking instrument. I've seen some schematics for other tachs requiring a filter, others without. Just adds to the speculation.
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