[sideshow]

Maybe find out what signal is needed to run the tacho from
where u bought it or send tacho to us and we will try our best
to get it working as there is 4 or 5 differnt things we can
do to try get it working
unfortunately most every day auto elects don't really know this sort of stuff
and way we learn it is to test different things on our bench testing
setup which no one probably has over here
another thing u can try is the autometer tach booster
which wires into the coil power wires
but they r about 100 bucks