switched 12v source for my Holley Sniper

Ok, I re-ran the bench test and I must have not had the switch fully switched, it is a new switch so I put the cylinder in and did it again, you are correct, IGN1-Blue in Run only and IGN2-Brown in start only.

So I go back to my ignition module installation on the blue side of the ballast 12v on run, if there is no voltage on the blue from the switch on start then the ignition module is getting a reduced voltage through the ballast from the IGN2-Brown wire. For 20 years I have assumed that the IGN1 was hot during cranking because my ignition module is getting power, this is the first time I have actually tested the switch and thought this through.

So back to the question of power on both run and start I would say hook up to the blue (IGN1) it will get power (although reduced, probably enough) through the ballast. If there is no ballast then you could just tie the brown and blue wires together. In run the ST and IGN2 are not connected in the switch so no back-feeding to the starter relay from the brown wire.


Alan