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ray_mcavoy · 01-20-2018, 07:02 PM

For temporary testing/diagnostic purposes, yes, you can wire the HEI directly to the battery.

However, it order to shut the engine off, you will have to disconnect that wire from the battery. And you won't want to leave the HEI connected & powered on when the engine isn't running or it will drain the battery.

01-20-2018, 07:02 PM	#2
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,354	Re: HEI to battery? For temporary testing/diagnostic purposes, yes, you can wire the HEI directly to the battery. However, it order to shut the engine off, you will have to disconnect that wire from the battery. And you won't want to leave the HEI connected & powered on when the engine isn't running or it will drain the battery.