W210 Rear window relay location

[mart280]

Hi guys, I recently replaced the window regulator in the offside rear as it stuck down and some bits on the old regulator broke, connected the motor up and it will move down but not up, bought a 2nd hand motor off the bay thinking that was the problem but it does exactly the same, mate who was helping me said it must be the relay, does anyone know where this is located ? or has had the same problem.

 

[mart280]

No one had a similar problem, I'm stumped what to do next.