Hi Redz,
looking from above the positive terminal is under the rubbery cap at the toprear.
(use a multimeter to check but that's where it is on mine, fitted another power cable from alternator to battery from it the other week)
I have some 4AWG Red Cable cut to the correct length from alternator positive to battery positive,
if anyone wants to buy me a cold beer at JAE they get one...
(I have 3 or 4 cable offcuts I think, I have 4AWG ring terminals to suit too @ cost

)