Ended up calling Engo. They said they use 3.5 gauge wire, so I went with 2 gauge. Had cables made at a welding shop. The cable is heavy duty and very flexible. I also got the welding quick disconne ts for the batyery leads in case of emergency. The solenoid assembly sits on top of battery.
Final product:

Sent from my SAMSUNG-SGH-I337 using WAYALIFE mobile app
Final product:

Sent from my SAMSUNG-SGH-I337 using WAYALIFE mobile app
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