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Key and cranking 12V source.

Started by 70Barracuda, June 10, 2017, 09:38:02 PM

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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
Sniper, 493/383, Firmfeel, RMS Streetlynx, Speedhut. Dana, 4 gear.

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
Sniper, 493/383, Firmfeel, RMS Streetlynx, Speedhut. Dana, 4 gear.


Chryco Psycho

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

shawge

 :iagree: for my MS, I wired the blue and brown wires together to trigger a relay that provides power.
1970 Challenger, 451 MS3Pro EFI
Colored wiring diagrams
Wheel spreadsheet

70Barracuda

The positive side of the coil does both I believe?
Sniper, 493/383, Firmfeel, RMS Streetlynx, Speedhut. Dana, 4 gear.

70Barracuda

Fitech has one white wire for 12 and cranking 12.  They just told me to put it on the + coil terminal.
Sniper, 493/383, Firmfeel, RMS Streetlynx, Speedhut. Dana, 4 gear.


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?
Sniper, 493/383, Firmfeel, RMS Streetlynx, Speedhut. Dana, 4 gear.

Chryco Psycho

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