m50 main battery cables

[makman]

On the e36 loom they are two thick wires, one black, one red...are these both positive or is the black an earth?? They connect to a plastic box thing and im unsure about the black one

[Jimbob]

Sounds like the terminals that connect to what would've been the cables running to the battery in the boot.

[randomspeedfreak]

post a picture

[makman]

Im.not with the car at tje mo.mate so i cant but im sure it.is the bit which connects to the battery...im 100% about it..just that black cable

[deanocool]

just been out and had a look at mine to jog my memory dude. from what i can see using my phone as a torch lol, there are 3 mains cables to hook up. the thickest red main and thickest black main youre talking about both go to the positive terminal. there is a thinner black main that goes to earth that is originally loomed up into the round diagnostic pacman plug loom. i seperated this so the diagnostic plug can go into the plastic bracket on the 4 cyl wiring cover. hope this helps dude