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Coil relay mod

  • Thread starter Thread starter Narcoleptic_Snowman
  • Start date Start date
well your correct

wire 86 to the kill switch, thats gonna be the two orange and yellows that were once going to the coils....

and wire 87 to the coils... where the orange and white wires go into them...

that should do it. wire it up and give it a try!
 
i also recently did this mod and ended up uncovering a slipping clutch:D
 
80GS750 said:
well your correct

wire 86 to the kill switch, thats gonna be the two orange and yellows that were once going to the coils....

and wire 87 to the coils... where the orange and white wires go into them...

that should do it. wire it up and give it a try!
Click to expand...
Ahh. I think a light just came on. Now let me get this straight. I will put the two orange/yellow wires together that come out of the wire harness and connect them to #86. Then I will put the two orange/yellow wires that come from the coils,wire those together, and connect to #87 which would place this whole setup in between the original power supply to the coils.
Do I have this right?
 
yes! all your doing is stopping the power from going through the harness, and rerouting it straight from the battery...

now you got it
 
O.K. I am officially nuts now. I have # 85 to the ground, #86 to the kill switch,#87 to the coils. My relay has a #36 instead of #30, which I have to the power. Problem is there is no power to the coils with the key on and the kill switch in the run position. # 87A is hot all the time. What is going on here? What am I missing?:-?
 
bubba said:
O.K. I am officially nuts now. I have # 85 to the ground, #86 to the kill switch,#87 to the coils. My relay has a #36 instead of #30, which I have to the power. Problem is there is no power to the coils with the key on and the kill switch in the run position. # 87A is hot all the time. What is going on here? What am I missing?:-?
Click to expand...


Maybe this coil wont work? Does the case have a diagram on it, the function and pinout of this relay may be different than the 30/85/86/87 relays.

Sounds like you have everything wired correctly otherwise.
/\/\ac
 
Sorry I mis-spoke. My relay is a Bosch and it has a #30 pin and not a #36. I pulled 2 other relays from my Ford and it didn't change anything. Maybe I did something wrong somewhere else. With the key on and the kill switch in the run position, I have power at the wiring harness from the kill switch. But no power from #87. I did wire the 2 coil wires together and the 2 kill switch wires together. I am also using a store bought socket for the relay. I am at a loss as to why this doesn't work. Can anyone think of where I may have gone wrong?
 
sounds like you did everything right....

try bypassing the relay, battery straight to the coils, and see if it runs, if not than you know its not the relay for sure...
 
Thanks. I did bypass the relay and had 11.24v at the coils straight from the battery with the key on. I didn't try to start it but I assumed it would run as it ran fine before I started this. I am about ready to give up on this project and just wire the coils back up the way they were. One thing, should the relay click when the key is turned on? Mine doesn't but I do have power at the back of the socket at #30.
 
well if that worked, than you must have problems with the other side of the relay, the kill switch wires going into the relay then going to ground....

as long as your sure the relay is good thats the only other option...

mine doesnt click at all...

maybe your not getting enough voltage through the kill switch wires to turn the relay on? maybe a bad ground wire?

lol, it never ends....
 
Well the battery is a new big crank with a full charge. I have the relay grounded to the neg. battery post. I guess I will check the voltage at the kill switch wires. There is some problem here but I can't seem to put my finger on it. One more shot then I am going to put it back the way it was.
 
Well I just put the wiring back the way it was and she fired right up. I'll be damned if I know why this didn't work. I hope someone wiser (and smarter) than me will read this tale of woe and figure out where I went wrong. If so, I am ready and willing to take the ass kicking I deserve.:D
 
Bubba, I didn't read your whole thread, but I can assure you that when done right, it will definitely kick up your ignition a few notches and give you more evenly distributed, smoother power than you thought possible. I'm a moron with electrics, and my 81 GS850 started halfway thru the first crank after I did mine. Before then, it would turn over 10 or 15 times before it caught. Even before rebuilding or tuning my carbs, this one simple mod gave me power that to me was almost scary.
 
bubba you need someone in your area to come by and take a look at this....

otherwise theres no real way to double check yourself...

if you wired it up right, the only thing that could be bad is your relay.. but you said you tried several ones... so i dont kwow what else to say...
 
80GS750 said:
bubba you need someone in your area to come by and take a look at this....

otherwise theres no real way to double check yourself...

if you wired it up right, the only thing that could be bad is your relay.. but you said you tried several ones... so i dont kwow what else to say...
Click to expand...
Thanks. After noodling this I came to the conclusion that it must be a bad relay. I could never get any power to # 87.By everyones account I had it wired right. I went over the instructions many times. I have a pair of Katana coils that I want to install sometime so maybe I will attempt it again then. But with a new relay.I have to get new plug boots for the Katana coils anyway as the don't fit over my plugs. One question, what would happen if you left the old wiring in place and installed this upgrade also? I didn't do that, but some have mentioned their relays failed. If you left the old wiring in place, at least you wouldn't be stranded. Maybe it wouldn't work. Has anyone tried it?
Anyway thanks to everyone for their help and input. If I try it again I will report the results here.
 
bubba said:
If you left the old wiring in place, at least you wouldn't be stranded. .
Click to expand...

Set mine up so the relay can be bypassed just by plugging the trigger wire from the ignition and kill switch into the wire to the coil. Makes it just like it was from Suzuki.
 
tkent02 said:
Set mine up so the relay can be bypassed just by plugging the trigger wire from the ignition and kill switch into the wire to the coil. Makes it just like it was from Suzuki.
Click to expand...
I like that idea! Why not go one step further and wire it to a switch? You could hide it behind the side cover.
 
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