Does anyone have a Fuse box diagram for the T6?

[lemmiwinks]

I'm trying to connect an oem trailer wiring harness to my T6 transporter. Electrics basically plug into a plug within the rear quarter panel. Although I'm not getting any more current than 1.35v when testing the wires (indicator, brake, parkers etc.). And same thing at the trailer socket. Is there a fuse for the wiring that runs to the rear of the T6?

Would anyone happen to have a wiring diagram for the T6 now?

 

[Loz]

Missing earth connection?

 

[lemmiwinks]

The harness doesn't come with an earth eyelet. plugs straight into the socket in quarter panel