Ok people, I need someone to tell me which wire in the engine bay fuse box can be tapped ..

I need a 12v source that is HOT while cranking & hot while running..

ok thanks :)


I'll be waiting ... patiently..... :redface:

You can test with a voltmeter if you wish, but for the most part in our cars...red is switched and yellow is constant.

I suggest going with a relay on an ignition wire. This way, you won't burn out the system.

here ya go:

fuel pump relay (E49) pin 2 (red)

http://hmaservice.com/xml/graphics/CR/CR05F011.gif

OR

engine control relay (E42) pin 1 (white)

http://hmaservice.com/xml/graphics/CR/CR05F028.gif

take your pick, and knock yourself out.
http://www.hmaservice.com/xml/graphics/E2/E2KC301D.gif

I would use a relay on the devise itself as well. When I installed my shock sensor to my factory alarm, I added a relay to turn off the sensor once the engine is started. This allows a higher amp rating to the devise you need to power.

I need the pin-out for EC03 in the image above...


lol...

I think I was just able to trace 2 wires from that harness that are hot while cranking...

sweet... i'm going to patch into one of them for my switched power source :)

Wish me luck !

Good luck... Might I ask what it is for?

it's for the MSD ignition system ford just installed....

http://www.elantraxd.com/forums/showthread.php?t=5186