Routing of 750 Wiring Harness

R

RJS

New member
Location
Canada
My ‘73 SF1 came as a pile of parts with no wiring harness. If anyone has a similar model, with the gas tank off, would they mind taking some photos that give some indication of where the wires run in that area. That could be very helpful to me. Thanks
 
Not photos,but my diagram and not standard, but much improved, for my old SF (0) and GT, may help along the way.

 
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I just happen to have the tank off my SF2.
It's not difficult, just a case of patience and common sense. Start in the middle of the bike, routing the wire for the neutral switch down and from there, back towards the fuse box, battery, starter relay, rear light and brake light switch, and forwards for all that's up front. You'll likely have to pass some wires several times.

Paul
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To be honest Paul, I think the original wiring route takes quite a bit of pondering. I was looking at my SF2 and it would have been easy to rip the wiring out but putting it back correctly may have been problematic, so I left it and will work around it.
 
pf1 said:
To be honest Paul, I think the original wiring route takes quite a bit of pondering. I was looking at my SF2 and it would have been easy to rip the wiring out but putting it back correctly may have been problematic, so I left it and will work around it.
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I honestly don't think so. I, like yourself have restored quite a few bikes, and the laying out of the wiring harness is common sense.
I've no idea if the wiring on mine in the photos above was routed like that originally. I restored that bike at the end of the 80s from the frame up. My first big bike resto.

Paul
 
SF1 has the main connector assembly under the front right of the tank (you can see the flat metal plate with two small threaded holes where the plastic strip connectors attach on an SF1). Quite different to SF2. But i used to work from the fuse box forward when refitting a std harness. Always looks messy until you cable tie stuff in place. There are easy ways to improve on the factory harness - adding relays a very useful mod.
 
Thanks for that. I never noticed those tiny threaded holes. The bikes Ive seen just used cable ties to hold the strip connectors in place and not too neatly. I’ll have to look for something to thread into those holes. Working from the fuse box forward makes sense.
 
Thanks Chris. Your photos, along with a friend’s, as well as other suggestions here have given me pretty much everything I need.
 
Serendipity - I was looking on the forum for photos of an SF1 under the tank so I could check my throttle cable routing - and found some posted by that very helpful person chrissoz! RJS - did you ever rewire your SF1. My MotoGaget has arrived and I am going to get rid of all the hacked about wiring and hopefully get it all nice and neat.
 
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