crist488

im hooking up some gauges to my car and im trying to find a constant 12 v source and a switched 12 volt source in my fuse box inside the car but i dont have any tools to find out

90Rexx

constant 12v.... you can pull right from your battery... run a wire to your power cable from your batter.

and most everything in the fusebox is switched power... lights fuse radio fuse ect.

only thing i can think of thats constant power in the fusebox is... um.... actually cant think of anything lol

crist488

do you think slot 31 would be constant?? its says its ecm/pcm pgm-fi main relay integrated control unit fuse or can i use my radios constant power source?

90Rexx

use the radios constant power...

i think that fuse you speak of is switched ON using the main relay... meaning its not constant power.


can i ask why you need constant power for guages though???

crist488

they are the glowshift gauges so its need a constant source so that it can remember my color settings b/c it has 7 diff colors

crist488

u think i can splice the gauges ground wire to my radio ground wire

90Rexx

dont do that... just take the ground wire from your guages and make a new ground... get one of those connector end things and stick it where a bolt goes into something metal.

apexi_rsx

use a voltmeter in ur fuse box under the dash. there are a few open slots above the fuses that u can hook a female connector to. one is hooked to ignition power and would give u a constant 12 volt when the keys on and off when the keys off. hope that helps.

90Rexx

he said he doesnt have the equipment to check that stuff properly

apexi_rsx

u can buy one on ebay for less then 10 bux and use it a life time.