Battery cables what ones do i need ?

Hello guys, need some new battery cables for my mk1 1.6 GTI, what's awg wire will i need and also the negative terminal has 2 crimps one to the body of the car and another on the engine mount/block, I can't find a a earth terminal with 2 crimps would it be ok Just to ground it to the chassis or the mount / engine block not both or would i need another earth earth strap, all help appriciated also if anyone knows where to get some from thanks

There are one piece cables that are avail from vwheritage for the grounds they have a battery end on one the middle lug for the frame and a length to the engine/tranny.

I opted for 2 off the shelf cables from a parts store, I measured the distance from the battery to the frame connector and the Frame to the engine/tranny.
I bought one cable from the battery to the frame with enough pigtails to splice the add-on wires and do away with all but one ring connector.

I tied this to the frame horn, I took a battery to battery Jumper the same length as the one from the Frame to the engine/tranny mount and added that.
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Along with this is that at the Frame horn, I cleaned the Study.
Prior to install I flattened the stud ends with a hammer and slightly scuffed them flat.  I mounted them as a flat washer against the frame, Cable end, flat washer then cable end to the engine'/tranny followed by flat washer and lock washer and nut.

After tightening them I sprayed the connection with battery corrosion protective paint….

One one of my Beasties I replaced the main Power with a similar cable (red of course, with Pig tail take offs to eliminate the few Ring connectors present.

Now here are the Caveats.  You have to have a good pair of Crimper Pliers, the ones that dimple the middle and have long handles to ensure a proper crimp on the butt connectors.  I also sprayed the Butts with Clear Krylon paint to water proof….

Cleaning frame horn


removing onepiece cable


battery paint