sklein239

Thanks. this will be a big help. I appreciate it.

That is an idea for sure, but I would love to fully re-connect the system. Anyone know exactly where the 2 green wire ends hook up to under/near the dash? 1 to fuse and 1 to light or to a cluster based upon Kats good info? KATS, do you have a higher res of photo you took of the actual parts/wiring?

Wow, great info here and nice job! I struggle with wiring, so can you tell me where exactly the G and GB wire run ends connect to under the dash? Looks like diagram shows 1 to fuse and 1 to power/ 12v?

I too have similar problems, and gave up after many hours...anyone know of someone in FL who can work on tachs/electrical challenge for the early Z's?

This is great info, thanks all. One question...on the original wiring of the 4 wire tach on a '72 Z, where is the "12V" wire connected to? (my wire is yellow/redstripe)

My Z exterior project is complete...but my skill level for interior work is not as solid as I thought! Anyone know of a good place who restores interiors in Florida, pref South FL? Cheers!

Thanks for the advice, I will check the timing setting. As far the Vette, I haven't seen it but will keep an eye out.

I have tried to rebuild carbs for the first time...not too bad, but I get a hesitation/ stall out when first accelerating then it runs great. Any advice or know anyone in South Florida who rebuilds them? Cheers!

Yes, FL is expensive due to EPA regs. this place does a nice job...my rear bumper, 5 piece was $500 www.tricityplating.com

Hi- I have a 1972z, and there is a Allison XR700 Electronic ignition with a CraneCams HI-6 Discharge ignition with auto sequence rev limiter in my car, it was installed before I bought the car. The tach is not working, and I was wondering where does the tach connect to with this system. THANKS@

this was previously installed, and not my forte, but it is a 1972, and there is a Allison XR700 Electronic ignition with a CraneCams HI-6 Discharge ignition with auto sequence rev limiter. Hope that helps.

I have been working on my Z for almost 2 years now, and what an experience! I am getting it back to really good condition. It has an electronic/push button start, and the tach is not functional. Anyone know where the tach should be hooked up to? Thanks!