Key and cranking 12V source.

[70Barracuda]

Hey every one,  I am installing Fitech, I need a 12V key on and in cranking position.  I am sure I can find it but thought I'd ask here to make it easy.

Where might I find it, any ideas?

Thanks much
Tim

[Chryco Psycho]

Ballast resister ,
12 v run is dark blue
12 start is brown

[70Barracuda]

I have one wire.  Hoping to find one wire that has both?

Thanks

[Chryco Psycho]

Connect your 1 wire to both the blue & brown wires  , there is not a single wire for both functions

[shawge]

  for my MS, I wired the blue and brown wires together to trigger a relay that provides power.

[70Barracuda]

The positive side of the coil does both I believe?

[70Barracuda]

Fitech has one white wire for 12 and cranking 12.  They just told me to put it on the + coil terminal.

[Chryco Psycho]

Only do that if you want the Fitech computer to fail,The coil power drops to 6-7v running
the white wire needs to connect to the blue & brown wires

[70Barracuda]

wont that back feed or do something bad?

[Chryco Psycho]

yup back feeds to a dead circuit [start only] in the ign switch same as it does now