400/4 build. Paused due to other commitments. But starting up again

[Sesman]

Mine un looks like this….

[Oddjob]

Seems they changed to the integrated brake light switch around 1978. It's under the reservoir.

[ComfySofa]

Ah - right - so, i probably cant see it in the pics but a couple of spade connectors then?

Another question....is there anyone on here thats done a Motogadget conversion on here and if so - do they have any pics of the installation?

[McCabe-Thiele (Ted)]

I found this article interesting as it seems to suggest that it's more complicated so not for everyone.

https://www.bennetts.co.uk/bikesocial/news-and-views/advice/bike-maintenance/guide-to-motorcycle-electrics/motorcycle-electrics-explained-motogadget-m-unit

[Oddjob]

Sesman (Phil) seems to have used a pre 1978 MC which doesn't have the switch, I presume he's still using the brake switch on the joint on the bottom yoke?

The later version which has the switch has a clear/opaque reservoir and isn't that easy to find, I looked yesterday on Ebay. It was fitted to the GL1000K3 and is part number 45500-431-611. https://www.cmsnl.com/honda-gl1000k3_model50510/cyln-frmaster_45500431611/

Also seems to have been fitted to the CX500, that's a common bike and may make it easier to find.

Just found a couple on Ebay, seems it hasn't got the clear reservoir, looks like your current one except it does have the switch you need. Example ONLY.

https://www.ebay.co.uk/itm/334439026578?hash=item4dde1e8f92:g:QnIAAOSw~9tifUec&amdata=enc%3AAQAHAAAAsD3bl8kLqkCUqn1hnNIVSGmeYsUpSUa3D7P41c4%2BvVlu%2BKGqBvXN9izMQ0LYbxfE7g7m2v2f%2BUzUttQevWk%2Bkbf60C9z2mrhLW36JB%2BnfDcMfPLAsTyiG6HqAYaer5qm95j0%2BlkeHEUvHiTdzi87VzXeyUczAskURTs%2F3pNREelPU5hSW9GoeDxq79gzgqoZD7crKsAUO4RiuCP624IyhtCocNOqeh3pgu7qcdNcdCrT%7Ctkp%3ABk9SR-KxtariYA


https://www.ebay.co.uk/itm/325194420811?hash=item4bb719124b:g:IiYAAOSwt2dihQbi&amdata=enc%3AAQAHAAAAsHUuGgAx0jV8z6IR8yj7zgA0aGfjOJyAZFUuBPouUNXHo8cemYMz798lawO%2Fqz%2FYgfgAcNe5ny0PB6z3T5fLQi7KVDPQ4IChf%2Bxcsp5xSvQcUwhjIc%2BgrFPjyPbCFmqxuHHO3o6npPDyyoKs%2F4EyxYR2Ajv1ZdOHuFg3ix6AYaTYcY%2FQUYBiBPVgF7zXm33HEbwKo3xwVJ7Ikmjvfhmh4ySptb6q8%2BAkTDaXdgNeBFJD%7Ctkp%3ABk9SR-CxtariYA
A 1978 GL1000 MC, with clear res,

https://www.ebay.com/itm/373625828559

Roo is going to the states later this week, maybe he can have a look in the scrapyard for you. All you need is a round top MC with a brake switch.

[Sesman]

Yes, I’m using the pressure switch at the down pipe union. Pardon my ignorance, but what’s the bolt for under the lever pivot?

[Oddjob]

The earlier type had a small plate fitted there which covered a small rubber tube which went up inside the pivot point, I seem to recall it was for helping the lever return to the out position. Not sure why they've fitted a bolt there and added a tab washer, try removing and see what's under it?

[Sesman]

Will co.

[Nurse Julie]

Yes, I’m using the pressure switch at the down pipe union. Pardon my ignorance, but what’s the bolt for under the lever pivot?

It's an anti rattle aid, a bit of rubber tube that stops the lever rattling.

[Oddjob]

Yeah that makes better sense Julie.

[Laverdaroo]

Check out Classic Octane for a vid on the M unit on You tube. Also have a look at Revival Cycles , they have several vids on the subject of fitting them with Honda's and keeping the switches on the bars etc....

[ComfySofa]

I will do - im a little bit ahead of myself at the moment re the wiring but my mate who helped with the supermoto wire-up is more than happy to help with this one....so it should be relatively straightforward....coming back down to ground ill soon be at the point where i can wire in the coils...the original ht leads and caps are on there 40 odd years old....im assuming the HT leads are just a "push and twist" fitment (id like to give it some fresh red leads and new caps....

[Bryanj]

Leads are soldered inside coils, look up ash's fix in his dropbox

[ComfySofa]

Ugh - that sounds bad....not sure what you mean...is there a link somewhere?

[ComfySofa]

Having said that are there somesort aftermarket coils available....a long time ago when i was running a 7/11GSXR Dyna coils were the ones to have.....couple of spade connectors and push twist fitting for the HT's....does that kind of thing still exist?