the one from battery to the starter is the +ve, the -ve goes to the gearbox?
either way rob battery/starter/alternator cables from MK3 Golf in scrappy, +ve are direct fit just need to cut out your old blue wire and stick it to the mk3 alt wire (you'll see what I mean)
-ve isnt quite a direct fit, the ring terminal to the battery tray earth point doesnt quite reach so make up a short piece of chunky wire to bridge the gap. if you're lucky and theres some Passat B4 in the scrappy, some of them have the right -ve lead which is a direct fit on a mk2.
if your mk2 is pre-88 then it'll have the early style earth on top of the gearbox, if so nick the MK3 bolt where the gearbox earth attaches and fit it to your car
