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I can't find my ignitor!

  • Thread starter Thread starter ratgs
  • Start date Start date
R

ratgs

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Hello friends, I have a 1979 GS750 and I am trying to build a simple wiring harness after it was massacred.

I was confused at first by the manual's depiction of the rectifier and regulator being separate whereas mine has the combo unit. Using the 750 diagram on basscliff's website I found how to wire the R/R but it shows it running to an ignitor box.

I cannot find this on my bike. I've searched here and on google, but all I seem to find is the part itself and not the whereabouts. I have also looked and multiple microfiche hosting sites and they neither show it or list it on the fiche. I plan to use the 550 simplified harness shown here http://www.mtsac.edu/~cliff/storage/gs/550_Schematic.pdf as it is a 4 fuse system as mine is(the others all show none or 5 fuse).

So any help would be greatly appreciated.

Thanks so much for the vast collective of knowledge here, you're always the best place for info on these bikes!
 
I had a '79 GS850 a few years ago and it still had points ignition so I suspect that your 750 might still have points. In which case you wouldn't have an igniter. Igniter is for electronic ignition. If you take the round cover off the right side you can see if you have points.

hope this helps.
Brian
 
If you don't have points, you may have an aftermarket electronic ignition

Either way, no ignitor, so you're looking at the wrong wiring diagram
 
Far as I know, ignitors were not introduced on GSes until the 1980 model year, and then practically the whole line-up switched to them. Remove your ignition cover to know for sure. If you see points, you have points, if you see a magnet and pick-up coils, then there is an ignitor somewhere. (Or there should be.)
 
I do have a points system. I'm waiting on the tuneup replacement package from a local yard because I discovered that the left assembly point was broken off.

So if I don't need it, is there a diagram anywhere to show how it connects through the r/r?
 
The diagram in the manual on basscliff's website for the 750 shows a single fuse set up with the separate regulator and rectifier. I have a lot more wires coming out of the r/r that I'm unsure what to do with based on the other schematics i've found. Also others i've found all have a 5 fuse system where as mine only has 4 in the fuse box. Main, Headlamp, Ignition, and Signals.
 
Last edited:
ratgs said:
The diagram in the manual on basscliff's website for the 750 shows a single fuse set up with the separate regulator and rectifier. I have a lot more wires coming out of the r/r that I'm unsure what to do with based on the other schematics i've found. Also others i've found all have a 5 fuse system where as mine only has 4 in the fuse box. Main, Headlamp, Ignition, and Signals.
Click to expand...
That diagram at the back of the 8 valve 750 manual is for earlier Gs750b like I have. The diagram for '79 GS850G (the color one) is probably pretty close to your bike. It shows an R/R, 4 fuses and points ignition.
 
Ah geez I didn't even think of trying that. I had an 80 850g that had the similar set up. Thanks a ton Canuck!
 
ratgs said:
The diagram in the manual on basscliff's website for the 750 shows a single fuse set up with the separate regulator and rectifier. I have a lot more wires coming out of the r/r that I'm unsure what to do with based on the other schematics i've found. Also others i've found all have a 5 fuse system where as mine only has 4 in the fuse box. Main, Headlamp, Ignition, and Signals.
Click to expand...

How many wires coming out the R/R ? Later units can have extra sense wires and newer ideas rewire that whole area a lot better.
Check out Posplayr's sig.
Generally there are four fuses in use in a stock machine. There is usually a fifth fuse at the bottom for any extras you might want to fit. In some cases this fuse will have been removed or used as a replacement for one of the others.
 
Ratgs, converting to that simplified 550 wiring diagram is an interesting project. Are you making a whole new wiring harness or modding the OE one?

Brian
 
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