This is the latest bit of progress. I wanted to be able to power the car's electrical systen from an external source for starting, etc. The battery is not very accessible and it is in a battery box as well so I thought a high-current connector that is used for aircraft GPUs would do the trick-- they are rated as 500A continuous and 1000A for a short time. This connector also provides a plug to charge the car's battery.
The mounting bracket is a surplus 2024-T3 angle and a piece of 7075-T6. Lots of fun cutting out the oval hole for mounting the connector. All I have to do now is tighten the Hi-Locks. If you are not familiar with Hi-Locks, don't feel lonesome. They are like regular hex nuts but they are self-locking and are scored circumferencially so at the right tightening torque, the top shears off. No torque wrench needed! Cool little things.
Regards, Neil Tucson, AZ