MAD Bypass Question

Where you pull power on the old mopars is important.

Headlights since they are rarely on with engine off, alternator. Fans, power top and some other accessories, might be better at the starter realy or B+. Depends on whether you run those items with engine on or off. If you have a lot of heavy pulls, running a distribution stud, attach charge line and run a heavy gauge line from B+ is decent approach. Not factory, but would be better than the starter relay.

The wire around, upsize it from the standard wire. The ones I put together 8ga with a fusible link. The larger the wire from alt to battery the better to a point. 6ga would be about as big as you may need based on amp draw.

Lots of ways to skin a cat.