how did you try it? i tried once with a meter and didnt get a reading but they were working,

the only way they wont work is if any of the wiring is fooked, i would go back and do the wd40 thing in all the plugs inc the big round main plug sat on the little bracket on the right of the inlet.

its all rigged to the EDIS in a way mate, have you tried another edis? or even wd40 the plug?

also i take it you have checked relays and fuses? the green relay in the fues box has and does cause problems, and a few people are having them at the mo, lol, check it, not saying its that but it take 2 mins to check, any sign of black on the pins clean it with wet and dry and put back, wont hurt to do that anyway really, lol