western Posted January 18, 2019 Share Posted January 18, 2019 looking at manual wiring diagram, front screen wash wires light green/black trace goes only to the stalk pushbutton & earth, if you have the glass fuses, clean the brass contact clips, these do get verdigris on them & can stop the current flow. & check the fuses are all good. on the fuse holders only one side of each block is live, some a permanent live others are ignition on live, the opposite side is the output to each circuit so should only be live when that circuit are acually in use. Quote Link to comment Share on other sites More sharing options...
Jocklandjohn Posted January 18, 2019 Author Share Posted January 18, 2019 Ok thanks Ralph. Whats the actual set up from the ignition to the fuse holders - does a wire from the ignition switch a relay to activate them? Quote Link to comment Share on other sites More sharing options...
western Posted January 18, 2019 Share Posted January 18, 2019 Just straight from stalk to wiper motor no relay on a 89 110. 25 is wash pump, 47 is wiper motor, 28 is column switches Plain green is the ignition controlled 12v power from fuse box to switches Quote Link to comment Share on other sites More sharing options...
western Posted January 18, 2019 Share Posted January 18, 2019 G is the plain green, in this extract its direct from output side of fuses to column switches Quote Link to comment Share on other sites More sharing options...
Jocklandjohn Posted January 18, 2019 Author Share Posted January 18, 2019 Thanks for doing those for me - thats really helpful! Quote Link to comment Share on other sites More sharing options...
western Posted January 19, 2019 Share Posted January 19, 2019 Your welcome, thought the might help. Here's to curing the fault. Quote Link to comment Share on other sites More sharing options...
Jocklandjohn Posted January 21, 2019 Author Share Posted January 21, 2019 Well some success! The front window wash motor power feed is the one that was not working, I established that by putting a new local earth from the motor to chassis in the front wing. Bingo - it now works. However easy the cure seems in retrospect, it was puzzling because there are two relays on that circuit and triggering different items and some strange combination of wiring had got both relays knocked out and blown a fuse. One relay is used to trigger all the auxiliary stuff off a separate fuse board - dash gauges, aux interior lights, fan etc -and the other relay triggereing a set of roof spots all of which had ceased to function. Once I re-established the earth at the washer motor it all came back on, relay clicked in and everything works. I still have not figured out where the missing earth that caused this is lurking nor how it got messed up, although given the wiring its possible the culprit is the folks who renovated the van a decade ago and who did some seriously dodgy stuff with the loom which I am slowly unearthing as time goes by. So thanks all for the help - the wiring diagram was particulalry useful. Quote Link to comment Share on other sites More sharing options...
western Posted January 21, 2019 Share Posted January 21, 2019 that's good news, glad the diagrams were useful & you managed to track down the culprit, maybe whoever wired in the other items/relays used the wash pump earth to complete the circuit or chopped the wire for a easy access earth point. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.