Run the power straight from the battery or from the connection on the pdc to a relay then to your switched ignition source. Imho the best way to do this is to wire in relays to perform high draw functions.
Keyed 12 Volt Source Under Hood 1999 2013 Silverado
12v switched ignition source. 7troadster premium member. Heres the wiring diagram if it is helpful in any way. I use that for the switched power for my iphone cradle. If you cant find them let me know ill grab a digital pic post it. Are three small spade contacts at least one of which is switched 12 volt i think the other is constant 12v not sure what the 3rd is maybe ground. A handy place to pick up a switched 12v lead for power relays is to use the yellow wire that goes to the windshield wiper motor.
Jump to latest follow 1 20 of 20 posts. That way the wire from the switched ignition source draws minimal power basically acting as a on off trigger. Could get a fuse holder tap. Connect it to the fuse and plug in the fuse. It has a u shaped end that clips onto the spade of the fuse other end is like a pigtail. The problem i have is that this sytem looses power for a brief moment when the key is let go from crank and switches into run.
My interwebs skills have been failing me and i cant find a solid answer for it. 12v ignition switched power source. That way you can run. Whats a good reliable source for this. Joined may 13 2010 1778 posts 2 aug 28 2014. Or tap into any switched 12v source.
That results in a tailchasing startstall with the efi and ign coil briefly loosing power. That way it wont rob the pre existing component of much electricity. This is the only source of ignition power during cranking it originally was the brown going to the coil side of the ballast and therefore bypassed the ballast during cranking and also provided ignition power during this function. Little story upfront my efi requires a switched 12v source that stays active during crank and run. The ignition source is the most common source when dealing with electronic devices which require lots of when a car is running engine on the ignition on source is live supplying 12v. I deleted the ballast combined the wires and am triggering a relay that gives power to said switched 12v efi wire and ign coil.
Ive been chasing this issue for quite a while. Cadillac escalade esv platinum gmc sierra denali mercedes s63 amg lexus ls460. Ill need switched 12v source for an external fuel pump msd box and fan relay. Photobucket blows now btw.
Gallery of 12v Switched Ignition Source
