Manually triggering central locking motors

[pr0xZen]

How do I manually trigger the central locking motors to open/close? More specific, the fuel cap and tailgate. I guess the location to work from is the plug at the central locking relay/control unit - but then what? Short pin XXX with pin XXX ? for a split second or keep it shorted?
Both my passenger motor and central unit died, don't know wich killed the other. I have to wait a week for new parts - and I'm already running on fumes and dry toast.

[cornishtaz]

I'm sure you can open the tailgate with the key as it doesn't deadlock, you can then get to the fuel cap motor and simply remove it temporarily

[pr0xZen]

Because of ICE installation, I'd rather save tearing the boot apart, for last. It would take many hours.

[pr0xZen]

Ok, Black/red and Black/yellow. 12v and ground, turn around for locking/unlocking.