I recently bought an Autometer Electric Vac/Boost Gauge (with memory) it requires a 12v Switched source that does not turn off while the starter is cranking...
I have no idea where to begin to look for this... I was thinking of just using a switch on a line direct to the battery as a last resort.
I had a Cyberdyne boost gauge that used a 12v switched source that turns off while turning the starter.
I replaced that cyberdyne 3 times because the LED's would flicker or burn out... I don't think they were made for Arizona heat.
Any ideas?

 

If you mean a circuit that turns on and off with the key but still runs while cranking the starter, what about the fuel pump circuit?

Cliff

 

Great idea, but where can I locate the wire to splice into? Was hoping for one under the dash somewhere.

 

How about the instrument cluster power wire, does that turn off? I spliced into that for the light to my autometer gauge. It's black with a pink stripe and is in the wire bundle that leads up towards the steering wheel.

It says hot in run or start in my haynes manual.

 

Thanks! That one works...!
Much appreciated!

 

Use an add-a-circuit in the fuse box. There are two or three unused switched fuse spots. Then run a wire from there.

 

I checked some of those with a test light and wasn't getting power in on. Does anyone know a place that sells those add a circuits for a decent price? They want some $4+ at my local discount. That is F'n crazy!

 

i purchased one at a Norvac Electronics store, not
sure if they are on the East coast tho....

 

come on.....be a sport for $4

 

You know it cost them 20 cents to make that thing in China!