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 High torque starter wiring

 Created by: DCox
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 Posted: Sep 13, 2017 03:01PM
mur
Total posts: 5665
Last post: Sep 21, 2017
Member since:Nov 12, 1999
I had a new solenoid last about a week. I think they make the classic looking ones out of defective chocolate. The solenoid on the high torque starter will be reliable. 

I have used the rubber exhaust mounts as junction points for all of the wires when removing the solenoid from a car that originally had an inner fender mounted solenoid, you can also buy an insulated stud at automotive wiring suppliers that does the same job. While a solenoid is basically a relay for high amperage, the job of triggering the solenoid on the high torque starter will be done reliably for years with a modern waterproof relay, like ones available from Hella.

Whatever you do, take some time to fit caps and boots over large diameter wires. Pay attention to how all wires are routed. Ask yourself where these wires will be in the event of an accident.

 Posted: Sep 13, 2017 01:39PM
Total posts: 40
Last post: Sep 13, 2017
Member since:Mar 11, 2014
Thanks.  I was going to do what a couple others had done.  Let the current starter wire from the solenoid go to the new starter's big terminal, then put a small jumper wire from there to the starter's small terminal.  It seemed that way the solenoid would serve as the relay.  It is a new solenoid, so I'm hoping it will last a little while.     

 Posted: Sep 13, 2017 07:42AM
mur
Total posts: 5665
Last post: Sep 21, 2017
Member since:Nov 12, 1999
14 awg is fine, but it must come via a relay. The ignition switch is not sufficient to trigger it. You can use the previous starter's solenoid as a relay, till it fails.

 Posted: Sep 13, 2017 07:37AM
Total posts: 40
Last post: Sep 13, 2017
Member since:Mar 11, 2014
I've read through the posts from the past on wiring a high torque starter in a Mini.  My question is about the small terminal wire on the starter.  Any particular minimum/maximum gauge the wire should be?  I don't want to overload a wire or have too much resistance in it.
Thanks