Dave, my face is red. I probably sound as thick as two short planks, Forty eight hours ago I did not even know what the darn thing was even called. When it crapped out last time he got his digital VM and set up the voltages to the stepper. That is what I meant by the adjustment. I should have paid closer attention to the point he put his meter on. They were deliberately playing smoke and mirrors with me. I can actually do all this stuff, it really is a pretty simple setup masquerading as high tech which it aint, it is just that I am not familiar with the vehicle and don't have the local knowledge. A proper service manual would probably be a great place to start I guess. The workshop said they are sealed for life, throw it away and get a new one $500). Well I can tell you..duh!.....I carefully dismantled it, no easy feat. Got my wife's embroidery magnifying lamp and carefully cleaned the whole thing. Apparently they get all gummy from the aromatics in the fuel vapour floating about in the Plenum. Anyway, I can tell you the wiring is as fine as a hair but have worked on tons of microprocessors so none of that was a problem, reassembled the whole thing and .........and........duh! I doh wanna. Naughty words, wrath on all things holy, stuff it, large Scotch and plan B. LR4x4 Guru time. Do they use a polarity change for up and down or just a simple voltage shift? What do I do now?