+12v switched source that maintains power during cranking?

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07-23-2009, 05:40 PM

MacGyverGTP

2nd Gear Member

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Join Date: Mar 2006

Location: Arizona

Posts: 191

+12v switched source that maintains power during cranking?

Can anyone tell me where to find a wire that does this under the dash?
Colors/location?

I have a digital boost/vac gauge that recalibrates every time you turn it on.
I currently have it hooked up to my foglights, so I have to turn them on every time I get in the car before I start the engine or my gauge is miscalibrated.

I'd like to get it wired so I don't need the foglights.

Thanks for any ideas!

Last edited by MacGyverGTP; 07-23-2009 at 05:43 PM.

07-23-2009, 05:47 PM

Nuke

6th Gear Member

Join Date: Jun 2007

Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)

Posts: 16,182

Off the top of my head, I'd say the clock and any light circuit. I hope the gauge can handle low voltage during cranking or else it'll still try to reset as the voltage comes back up.

07-23-2009, 06:07 PM

HaneyMotorsport.Com

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Join Date: Apr 2006

Location: Goodyear, AZ

Posts: 1,631

There is one open fuse spot in the SJB (pass. kick panel) You can use a add-a-circuit to connect it. I don't recall which one it is though. A couple are switched power and one is constant.

Casey

07-24-2009, 09:10 AM

157dB

Cut & Paste Expert

Join Date: May 2007

Location: NW Arkansas

Posts: 13,322

OK, directly to the battery for starters (no pun intebded).
Hmmmm, one thats hot during starting?
How bout the starter fuse. Thats gotta be hot during starting, should it not?
A 1 Farad cap and a 1N4001 diode will keep the power to the guage during
starting no matter where you hook it up at.