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Old 10-13-2022, 10:51 PM   #16
Kojiro
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Join Date: Jun 2014
Drives: 2014 Black BRZ Limited
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Quote:
Originally Posted by RZNT4R View Post
It takes way less than 12V to start a car, a starter will crank down to really low voltage, often low enough that modules are flickering on and off and a car will crank and start down in the 10V range, heck, I seen some shit start below 9V but more to the point...

We have a binary situation here, not a slow crank, a crank and then -nothing- and I presume the dash lights are NOT throwing a disco since op hasn't brought it up so his voltage isn't so low that electronics are throwing a fit. It's still better to ascertain

"does car want to start by putting voltage to Switch terminal" Y/N

If Yes then you've got all the time in the world to worry about supplying a lot of amps to anything you might desire, but if No, a battery connection and ground path so clean you could eat off of it will not help it start.
That is correct. Lights on dash are not flickering or going crazy. They resume normal operations after attempting to crank and dying.
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