Re:

Posted by humanpotatohybrid On 2022/7/15 16:14:13

For the relay, connect 85 to ground/chassis, 86 to the starter terminal.

Though any relay or switch will work with reversed polarity, since DC current will always arc the same way when the switch is opened, sometimes switches designed for DC loads will be optimized for a particular current direction. Speaking in conventional current flow, the relay expects the current to flow from 30 to 87. Hence for a positive ground system, you want to connect the solenoid to 30 and connect 87 to battery.

I assume you ordered that NOS starter you mentioned? I have rekeyed mine in the past so I can help you through it, though I can't find the thread in which I wrote about it previously.