The solenoid on the mini-starter has three posts. 2 big posts and 1 small post. One main post has the wire that connects to the starter itself and powers it. The other main post is your battery power feed cable. The small post is your trigger.
You need to use a relay to trigger the starter. This can either be the original starter solenoid, or a Bosch-style relay if you want to remove the original solenoid.
You need to use a relay to trigger the starter. This can either be the original starter solenoid, or a Bosch-style relay if you want to remove the original solenoid.