late model starter....

Is it neccesary to install a seperate relay between the factory ignition switch and a late model starter solenoid?


in other words.... Can i run my main power wire to the starter hot all the time and run my start signal wire that used to go to the factory solenoid (red/blue stripe i think) straight to the late model starter solenoid?

i did my efi swap and im gettin ready to finish it up... trunk mounted battery and 3g alternator swap so i wont be using the factory solenoid and wiring

thanks for any info

 

Yes. yes you can. That is what I am doing on my 5.0 Efi swap.

 

i just ran a straight wire on mine...

 

Just asking because i don't know. Is this late model starter like a (dare I say it) chevy starter?

 

Yep pretty much the same concept with solenoid/bendix mounted on starter.

9

 

The solenoid on the starter draws more power than the relay on the fender. It requires a larger wire to get the proper current to function well. The smaller wire that Ford uses to operate the relay will work but it will heat and eventually fail. It is best to run the relay to operate the solenoid with a 12 ga wire and run the battery cable from the battery side of the relay to the starter. That lets the relay handle the power to the solenoid and the larger cable still supplies battery power to the starter without involving the relay.

 

ive never tryed it that way because when ford went to that type of starter they kept the solinoid on the fender. i figure that if ford kept the solinoid there instead of eliminating it and saving millions on building there cars by not having it they would have got rid of it.