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1978 XL100 Ignition switch Question

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So I currently have a 1978 XL100 which is about done with its mild restore as it didn't need a lot of help anyways. :smirk: The bike had everything except the key and ignition. In my ignorance I went on ebay and picked up a 2 wire ignition switch with key without noticing the wiring harness called for a 4 wire ignition switch YIKES help.

I went looking for a 4 wire ignition and man they dont seem to exist. Can I somehow wire in this two wire ignition to serve the same purpose or are there other options? As far as I can tell only 77-78 had the 4 wire ignition which has red, red+white, black, and green+white.

Looking at the diagram I thought I could use the 2 wires coming off the ignition switch and just wire them in with the following order but it didnt seem to do anything but pop a fuse. :smirk:

red from ignition to red and red+white

Black from ignition to black and green+white

Thanks in advance...

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Check Ebay.co.uk as there are loads of ignition switches on there, most should post to you for an added cost for postage

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Check Ebay.co.uk as there are loads of ignition switches on there, most should post to you for an added cost for postage

I had not thought of that I will try that for not only the ign switch but it appears this 78 also requires a 3 wire turn signal flasher rather than the 2 wire most have as well.

Thanks again

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I checked the UK ebay and actually didnt find anything but there was a US guy who had a ignition with no key...boooooo but was a 4 wire so I will take it up to a locksmith to get a new key made for it hopefully.

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Nice that would have worked perfectly but I already purchased this U.S one with no key but it does come with the OEM bracket to and I located a guy here who will make original keys based off the code on the lock.

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So have any of you seen a keycode of 6VJ703? I thought they all started with a letter then 3-4 #s after. The two wire ignition was as expected but this stamp on the ignition for this 78 XL100 is one I have not seen. It is a 4 wire ignition which 77-78 models have. I am trying to get the correct key blank of anyone has the Key blank # (should be on anyones key that has this year model xl100) that would help me a lot for 77-78 XL100 model only.

Thanks in advance

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