How do i

[GTi_James]

theres two brown black ones  ones black with a brown stripe or black with a brown stripe 

[Mark b]

It's the one between the back and white one mate

[GTi_James]

could be power supply drawing on my years of experience with replugging plugs  on a vehicle i think black is the earthed wire and red is positive, the other one is possible for your boot lid lock power...really confusing unless you get a meter reader in there tbh, if you take it to your local specialist they may be able to tell exactly what it is by looking at it, other than unplugging everthing in your boot and then one by one plugging back in the wires and seeing whats got power?

[Mark b]

I'm gonna get the wire tested in work tonight if that the only one with no power would it be a possible break rather then anything else ?

[GTi_James]

as in wire degredation? possible, constant heat and cold fluctuations, faulty wire from manufacturer or as stated before if that wires been yanked then possibly snapped or pull out at source behind fuse panel, checked there yet?

[Mark b]

I've not checked behind the fuse panel does the fuse panel come out or is there only access near the relay board

[GTi_James]

you can remove the panel and internal panel quite easily, its a mess of wires behind there though

[Mark b]

If I manage to get to it will it just be a case of following the end of the wire with no power or are the wires all connected into a connector

[GTi_James]

not entirely sure on that, probably same type of connections like an ISO lead  you'll need a particular tool for that too

[Mark b]

Got the wire tested and there is no 12v. Going to check the wire today in the front pillar to see if there is power there if there is then atleast I'd know the break is between there and boot .
Does the front pillar just pull off ?