Need help with my zz502 - Page 3

**earntaz** · #21 10-31-2017, 12:53 PM

Quote:

Originally Posted by drdave69

I'm not sure how to 'hot wire' it to the battery. Will it still start/stop using the keyed ignition switch if I run a wire to the + at battery and 12v side of the HEI? I still have the original tach in the car and the EFI has a control/monitoring module that has a multitude of 'gauges' including a tach. The wire in the HEI is part of the EFI harness.

When the engine is hot it will turn over just fine, it just takes time to fire. I usually open the throttle (1/2 - full pedal) to get it started.

Dave -- use a female spade terminal with at least 14 gauge wire. Spade terminal will plug into IGN terminal on side of HEI cap and other end to batt 12V + source. Next to the IGN terminal on side HEI cap is the TACH terminal. With this setup -- the engine is "hot wired". Turn key to fire it off -- to shut the engine off, you will need to disconnect the the IGN wire that you ran to the 12V source at battery ...

**drdave69** · #22 10-31-2017, 07:26 PM

Thanks. That is what I thought. I'll try that next time I monkey with it.

VintageMusclecar · #23 10-31-2017, 11:03 PM

If you "hot wire" (bypass the stock switch/wire) the ignition with a 12V source, you need to add in some sort of switch to be able to shut off the ignition.

**earntaz** · #24 10-31-2017, 11:09 PM

Quote:

Originally Posted by VintageMusclecar

If you "hot wire" (bypass the stock switch/wire) the ignition with a 12V source, you need to add in some sort of switch to be able to shut off the ignition.

A alligator clip at battery will work for quick disconnect -- if that is what you're talking about ...

**RPOLS3** · #25 11-02-2017, 12:54 PM

Are you using the original starter or a new "mini" starter. If using the mini starter they typically do not have the terminal like the originals due for the 12V line that you are talking about bypassing and that could be causing the problem. If it fires right up when bypassed that will be a clue.

**drdave69** · #26 11-02-2017, 02:09 PM

It has the starter that came with it 12 - 13 years ago. I haven't been able to touch it lately (been sick) but I think I can just configure a wire with a female spade and battery clip to hot wire it.