Tachometer Not Working

[hdixon]

Has anyone had a problem with there tachometer not working I just install a new bezel and added a 8000 rpm tachometer however I can't get it to work at all this is how I installed it the pink wire from the fuse panel ignition port to be powered only when the key is on. the brown wire I plug it into the tach side of the dist cap the tach only has 2 wires. this is and HEI dist

[vics stuff]

I have seen on E bay that some of the tacs advertised are for point type distributor and may not operate correctly with HEI type distributors.
Vic

[hdixon]

this tachometer came with the new bezel 1967-72 tachometer conversion kit with wire harness it said on the instruction that this tachometer is designed to work with most HEI ignition system but would need the tachometer adapter

[68 IRON]

Try running a ground from the back tin to the dash.....mine needed this.

[davepl]

Definitely check the ground. Then verify you have 12V power. Then confirm that you've got the TACH signal from the second tang of the HEI connector going to the tach (brown wire).

You didn't mention wiring in the tach adapter. Did you do so?

[hdixon]

this may sound silly but how can I ground it with only two wires coming from the tachometer as for as the adapter I bought 2 plug off ebay that fit into the tachometer side of the cap with a clamp that clips to the outside of the cap maybe the problem is I don't think I have the wire plug into the second tang I will try moving it to the other position on the cap

[davepl]

You just ground the case if I recall. You'd -think- it would pick up ground from the PCB, but I remember having to ground mine too.

[hdixon]

I will give that a try I will keep you posted I am going to buy a MSD and use a coil but not right now