Les Brock Posted September 28, 2008 Share Posted September 28, 2008 look at the back of the fuse box and look for purple one ! Quote Link to comment Share on other sites More sharing options...
Les Brock Posted September 28, 2008 Share Posted September 28, 2008 looking at the diagram it comes from the last fuse iirc in purple then out of the stalk switch in purple/black ribbon I can see me coming to sort this out Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 2, 2008 Author Share Posted October 2, 2008 See you Saturday then Les...? Connected up a brand new switch tonight only for it to replicate the same faults so the original switch would appear to be fine. I can also get the horn to sound if I put 12V to the correct pin on the multiplug connector in the switch loom. Basically completely stumped now Quote Link to comment Share on other sites More sharing options...
western Posted October 2, 2008 Share Posted October 2, 2008 Bish -- I can also get the horn to sound if I put 12V to the correct pin on the multiplug connector in the switch loom. is that by using the purple wire, if not, then I reckon you have either a broken wire or the connection at the back of the fusebox is broken. remove the 2 screws [1 each side of fusebox] & pull the whole lot towards the gearlever, then you can check for broken wires/connections, are all the multiplugs in the engine bay correctly connected ? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 3, 2008 Share Posted October 3, 2008 Bish, from your diagram you can see that the purple wire is the most likely cuplrit -try feeding it with a 12V from the battery, at the fusebox, this also feeds: Clock Hazards Interior light It also feeds into the back of the steering column switches -I suspect this will solve your other related problems TBH. Oh, following on from our conversation last night, I'll be around in Weston on Monday afternoon probably after 3 if you are about -I can take a looksie then if you like....? (if Saturday fails that is!) Quote Link to comment Share on other sites More sharing options...
Les Brock Posted October 3, 2008 Share Posted October 3, 2008 Cant remember if the power goes from the fusebox to a mulipin connector adjacent to the clutch master cylinder of straight to behind the dash Basically get you multi meter/test lamp.....then follow the power Incoming side off fuse Outgoing side Multi pin in multi pin out Inside of stalk/feed to clock etc Outgoing side of stalk Horn Start at power and go to every point until you loose the feed, then bridge that with a link, if it then works. replace that piece of cable properly.... check it works....Have Jaffa Quote Link to comment Share on other sites More sharing options...
Eightpot Posted October 3, 2008 Share Posted October 3, 2008 The loom for the horn comes up from the fusebox, behind the dash, into the multi-plug - upto the horn contact, back down to multiplug then the wire for the horn goes out the bulkhead by the clutch cylinder, along the back behind the heater and down the passenger inner wing. Assuming everything from the multiplug to the horn is ok, because it is, then the problem is between the battery and the multiplug. As your clock isn't working either, first check the fuse - glass ones I presume? I've had probs in the past with the contacts getting grubby or not gripping the fuse enough, the fuse being grubby, or the wire inside the fuse being detached from the endcap but looking ok. Then just get a circuit tester as mentioned previously and test you have 12v one side of the fuse, then 12v on the other. If both of those show 12v, the fault is in the wire between fuseboard and multiplug - test this by checking for voltage on the multiplug on the correct pin. If you have 12v there then the problem is in the horn switch or the multiplug. You should be able to make the horn work by bridging the pins on the multiplug with a bit of wire if the wiring is ok. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted October 3, 2008 Share Posted October 3, 2008 As stated.... Purple from the fuse to the switch. Purple/Black from the switch to the horn. Start at the fuse and work towards the switch. This diagram should be fine for the horn. #83 is the horn. Quote Link to comment Share on other sites More sharing options...
western Posted October 3, 2008 Share Posted October 3, 2008 just had a thought [No it didn't hurt ] carefully prise off the horn push cap & check the contacts & white nylon part & it's contact ring & spring are intact, the horn should sound if you touch the 2 contact fingers together. Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 3, 2008 Author Share Posted October 3, 2008 Bingo! After a chat with my tame electrikery guru (thanks Pete!) I found a loose wire behind the fusebox. One side of the glass fuse holder had broken in the past and the previous owner (from this point forward known as "the muppet") had simply jammed the bare wire into the fuse holder and relied on the fusebox being screwed against the bulkhead to keep the wire jammed into the fuse holder. Pillock. Of course, when we took the fuse box off to sort out the autobox wiring we spotted this seemingly spare (permanently live) wire and made it safe. Now I know what it is everything works as it should. Just need to get a 35A blade fuse and holder and splice it in and we're good to go. Thanks all for your help and patience with my electrical numptyness. Quote Link to comment Share on other sites More sharing options...
western Posted October 3, 2008 Share Posted October 3, 2008 glad to read you found the fault & have a permanent fix in hand & you did blow anything up or cause a fire. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 6, 2008 Share Posted October 6, 2008 Ah good news And yes, he is a muppet Quote Link to comment Share on other sites More sharing options...
bishbosh Posted October 6, 2008 Author Share Posted October 6, 2008 I also discovered that the fuse should only be 10A - Mr Muppet had decided that as he had eleventy million spot lights that a phat fuse was the way to go..... shame about the wiring eh? 10A fuse now restored to service. 1 Quote Link to comment Share on other sites More sharing options...
OzzieLR90 Posted February 27, 2022 Share Posted February 27, 2022 Reading this thread just saved me another hour of tracing, Thank you! Quote Link to comment Share on other sites More sharing options...
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