Mis-wired coil

[tadkins]

Hello Everyone!

First, I would like to say that I'm am forever grateful to those who respond to my posts with questions -- this is a great forum!

So, I recently replaced the igniter on my 85 and that appears to have solved my hard starting and dead-stick (rolling quit) problem. But, in the meantime, I've been in the process of pulling things off the bike to get ready for my first valve adjustment (and in the meantime changing the starter clutch).

As I'm pulling stuff off the top of the motor, I'm checking this and that and I notice that the #1 cylinder coil is wired backwards -- that is, the yellow/red on ground and the GREEN on Positive. This is problem #1. Now, I pull out my service manual and notice that the BLACK wire is supposed to on ground for cylinder #1 and the green is supposed to be on ground for cylinder #2. The coil as it sat was wired Yellow/Red on positive and Black on ground.

So, a couple of questions -- I've had this bike for about 2 months so god only knows how long the bike has been wired that way. But, it ran fine before the hard-starting and dead stick issue that my new "old" igniter appears to have solved.

So, could this mis-wiring have torched the igniter in the first place?

Does the coil develop any kind of memory for the wiring if it is in place for several hundred (or thousands) of miles?

Does it matter which side (+ or -) the wires are attached to the coils?

Does it matter which side (cylinder 1 or 2) the "teams" (yellow/red + green) (yellow/red + black)

I'm weak on electrical -- I can run tests with a handmeter but god help me to understand what's actually going on.

At the end of the day, should I wire per the diagram or leave as is or what?

TA

[tadkins]

Hey everyone -- my post was somewhat unclear -- the coil for cylinder #2 was wired yellow/red on positive and black on negative -- so, correct insofar as + and - go, but on the wrong side per the service manual.

In short, one coil #1 was yellow/red to negative, Green to positive
and coil #2 was yellow/red to positive, Black to negative.

Sorry about bad writing

[Jet⚡Black]

I guess I'm not 100% on what you're asking so I'll tell you how mine is wired so hopefully that clear it for you.

Sitting on the bike seat; my right hand coil is wired top coil post Yellow/red stripe, bottom coil post is black. Sitting on the bike seat; left hand coil is wired top coil post Yellow/red stripe, bottom coil post is green. Also the spark plug wires exit the coil closest to the engine not out towards the handle bars.

All four of those wires disappear into the harness, the yellow and red coil wires join together, and then the Yellow/red tees off in two directions one end goes to the starter button the other end goes into the IC igniter. The Black wire and also the green wire exit the harness and also go into the IC igniter.

In the color wiring diagram, the coil on the right side of the drawing is the same coil on your right as if you were sitting on the seat.

If your coils are wired different from this; yes you should change the wiring back to prevent blowing the IC igniter again.

I hoped this answered your question.

[rodney]

Thanks for this. I would have wired them upside-down.

[psnw]

Thanks for the thread!

I did have mine wired upside down.....I still had spark, but the darn thing won't try to start with starting fluid...won't even speak.


Could this cause a starting problem? I am really digging deep here to figure this out.

Originally - Wrong

Left side #1 - Green on top/Red yellow on the bottom.
Right side #2 - Black on top/Red yellow on the bottom.


Switched - Proper

Left side #1  Yellow and red on top (+) with Green on the bottom (-)

Right Side #2   Yellow and red on top (+) with black on the bottom (-)

Now, what tests can I do to see if I fried my IC?... if I still get spark am I good to go???


Right Side #1



Left Side #2

[xwindpilot]

I think there may be some left/right nomenclature confusion here. Left and right are typically named as though you are sitting on the bike. Hence the left #1 coil is next to your left knee or on the clutch side of the bike.