MSD TACHO Problems
 

Just installed a MSD 6a ignition control, with a tachometer adapter - running points.

Car runs really well but tacho now not working? (With or without adapter installed)

The car is a 69 911T.

Any answers out there - checked wiring all OK!

Wrong adapter.

Installed MSD 8910 - which should have been installed?

8920

Get a Bob Ashlock box it converts just any signal to an early type tach.

Have 8920 tach adapter for sale new $50.00 If you neeed it?

Just re-opening the this old thread.

I've just wired up my MSD Street Fire and fitted the MSD 8910 with my points. The tachometer still doesn't work. I'm sure the 8910 is for points and not the 8920, which is for a magnetic pick up.

Any suggestions on the wiring? I've tried both suggestions in a he instructions.

Apologoies for self-promotion, but hate to see you thrashing on this problem. Please give the TACH-ADAPT unit a shot. Our host sells them under part number PEL-TA-V3. Over 500 satisfied customers.