Supermirafiori MkIII wiring diagram

[strada]

if replacing your battery, look for one with something called "glass mat technology" they are fitted as standard in BMWs. i can leave my cars for 6months over winter, never had a problem,   i have a collection of mk3 dash binnacles if you want another clock, as for radio wiring, on r.h.d. mk3's follow the reversing light wiring from the trans mission tunnel under the carpet accross the floor to the pedals. you will find two unconnected wires (no idea what they are for but not used on uk spec car) connect in to the orange&white  one and use this to power the radio, use the red pemanent live wire to power just the memory as has already been posted.

[131DHOC]

Thank you for your helpfullness but I'll just let the watch as is.. the wiring you refer is in case an automatic gearbox is fitted, which is not your case as I can see.
Regards