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Message started by Steddy58 on 01/03/14 at 10:14:26

Title: coil
Post by Steddy58 on 01/03/14 at 10:14:26

Is there a +ve and -ve  side to a coil I've noticed that one of the spade connectors that come out of the coil is slightly larger than the other one , is there any reason for this ? cheers

Title: Re: coil
Post by Dave on 01/03/14 at 11:35:01

Well I am not sure why one is larger and one is smaller - unless it makes it so that you put the correct wire on the proper terminal.

One is the power supply - it is the red and yellow wire.  The other wire is the one from the ignitor assembly and it is black and yellow.

One thing you could do is to connect a small test light to the yellow and orange wire, and run the other end to a ground.  This will allow the light to shine whenever electricty is going to the coil.  If you are riding and the bike stops at the same time the light goes out - then you know it is something in the Safety Circuit that is killing the engine.....most likely a side stand switch or broke wire somewhere.  If the light stays on when the bike stops....then it could be something in the ignitor, coil, spark plug... or it could be a fuel flow problem.  Generally problems with electricity fail almost instantly - while fuel problems are generally more gradual.

Title: Re: coil
Post by Steddy58 on 01/03/14 at 12:50:05

Cheers Dave, that fella who invented electricity has got a lot to answer for,I wish it was a fuel problem it would be easier to suss,but when it goes there is no warning, like you say if it was fuel I would expect it to splutter but it is usually accompanied by a bang or a couple of backfires which is possibly the unburnt fuel firing in the hot exhaust and just coasts to a stop ( when I pull the clutch in or put it in neutral ), do you know which wire  goes on which connector on the coil or doesn't it matter

Title: Re: coil
Post by Dave on 01/03/14 at 13:09:17

I have the tank off my bike right now, and I can look and/or take a photo tonight when I am home.

Title: Re: coil
Post by Steddy58 on 01/03/14 at 13:31:25

That would be great Dave ,thanks a lot for your help - owning a savage doesn't half improve mechanicking  :-? skills and having a forum like this to turn to helps no end,thanks again

Title: Re: coil
Post by Todd James on 01/03/14 at 20:08:37

Here's a picture of the coil on my 2007 S40.
The extra green wire on the ignitor terminal
goes to my tachometer.

Title: Re: coil
Post by Steddy58 on 01/04/14 at 02:44:54

Thanks Todd, I presume that the 1988 savage is going to be the same wires going to be the same terminals ( the japanese wouldn't switch them around surely? or would they ?   ;D )  is the black wire on the fixing post ( dont know technical term ) of the coil an earth ?

Title: Re: coil
Post by Dave on 01/04/14 at 03:30:35

Todd:  Your camera is better than mine.

Steddy:  Pay no attention to Todd's black wire....you won't have one.  My bike is a 2004 and the top wire is yellow and black, the bottom wire is orange and white.

Title: Re: coil
Post by Steddy58 on 01/04/14 at 04:56:07

OK Dave thanks for taking the time, cheers , the reason I was asking about the black wire was regarding your idea of having a light connecting to the top connection ( the one that goes to igniter ? ) using the post as the earth ( if thats what the black wire in Todd's picture is doing ) for the light - or would I have to run the -ve straight to the battery, I'm sorry if I'm asking basic q's but I've already managed to fry one igniter and I'm trying not to cause meself more financial pain  :) p.s. whats that red wire going to your top connection?

Title: Re: coil
Post by Todd James on 01/04/14 at 07:33:42

Steddy:
Sorry, I forgot to mention the black wire on the "fixing post".
That is the ground wire for my tachometer.
The fixing post was the handiest place to connect it.

Title: Re: coil
Post by Steddy58 on 01/04/14 at 07:40:13

Cheers Todd, so it would be OK for me to run an earth to it then? ( my " fixing post"  not yours cos that would have to be a hell of a long wire   :))

Title: Re: coil
Post by Steddy58 on 01/04/14 at 08:47:40

Update - I've just been looking at the wiring diagrams and if we look at the coil ( C ) as connections 1 and 2  and the igniter ( I ) as 12345 and 6.   On the 1987-1994 diag. ( mine ) the  black and yellow ( BY ) wire goes from conn. 2 on the coil to conn. 5 on the igniter and the Orange and yellow wire ( OY ) goes from conn. 1 on the coil to conn. 3 on igniter - now then, the 1995 diag.has the BY from 2C to 4I and the OY 1C to 3I and to make matters even more murky the 1996 to 2003 wiring diag. has BY from 1C to 4I  OY going from 2C to 3I. The wiring diag. for 2004 is similar to 96-03 apart from the C has moved to the other side of the I - discuss   :-?  :'(.

quick modify I'll try and make it a bit clearer

87-94 ( my bike ) B/Y wire 2C to 5I
                         O/Y wire 1C to 3I

1995                   B/Y wire 2C to 4I
                         O/Y wire 1C to 3I

96-03                 B/Y wire 1C to 4I
                        O/Y wire 2C to 3I

2004 same as 96-03 apart from in the diagram the coil has moved to the other side of the igniter which probably has no relevance  :) and just as a theory couldnt someone produce a 3D wiring diagram so that you can picture it a bit more clearly

Title: Re: coil
Post by Steddy58 on 01/04/14 at 16:13:42

Further update - It is now gone midnight and after extensive research I think I have come to the conclusion that the -ve terminal on the primary has the black and yellow wire on it which goes to the igniter and the + ve primary terminal ( orange and white or yellow as I think it is but in my bike is a completely different colour ) goes to the ignition switch which means that my bikes black and orange should be on the bottom unless they've changed the polarity around post 95 ( oh god my head hurts ) can somebody please tell me if this is correct - not that my head hurts but about the +ve and -ve. I'm now going for a lie down and take some tablets gud nite all  :)

Title: Re: coil
Post by Steddy58 on 01/05/14 at 09:31:55


1B3C2D38200C480 wrote:
Further update - It is now gone midnight and after extensive research I think I have come to the conclusion that the -ve terminal on the primary has the black and yellow wire on it which goes to the igniter and the + ve primary terminal ( orange and white or yellow as I think it is but in my bike is a completely different colour ) goes to the ignition switch - I'm now going for a lie down and take some tablets gud nite all  :)


which, now I study the posts in the cold light of day after a good nights sleep, is exactly what Dave said  ::)

Title: coil pics
Post by Steddy58 on 01/12/14 at 12:52:28

Hi,does anyone on the forum have a pic of a 1988 sav coil in position and wired up, many thank yous in advance

Title: Re: coil pics
Post by Dave on 01/13/14 at 04:31:03


567160756D41050 wrote:
Hi,does anyone on the forum have a pic of a 1988 sav coil in position and wired up, many thank yous in advance


Steddy:


I am not sure what trouble you are having?  You have 2 photos of a coil wired up and mounted to the bike.  The yellow and black wire is on the top terminal, the orange and white wire is on the bottom terminal.  There are only two wires to hook up.  If the colors on your bike are a bit different....you are correct in figurng the wire that supplies power is on the bottom terminal (orange and white).

As a side note.....when looking at any wire you can most often decode what is going on by color (anything but the 1986 model).  Plain red is from the battery without being fused.  Red with dashes is fused positive power to the ignition switch or decompression controller.  Any plain orange wire is to deliver power to something after passing through the ignition  switch - if the orange wire has a white stripe or dashes - then it has also passed through another switch or control (like the starter switch or stop switch).  Yellow is the high beam circuit and white is the low beam headlight circuit after passing through the left handlebar switch).  Blue is related to the neutral lamp switch and light.   When in the turn signal area minty green is the right turn signal power, black is the left turn signal power, the running lights are brown, and the tail light wire is white and may have black dashes on it.  Check the wiring diagram for your bike to be certain and make a copy the diagram and put it in your tool kit - but in case you don't have one handy.....knowing the general colors and what they do helps to decipher what is going on when you see a bundle of wires.



Title: Re: coil
Post by Steddy58 on 01/13/14 at 10:23:18

Sorry Dave, the problem I am having is that my coil has one connector on the bottom  and one on the side not the top, with the small spade connector on the bottom and although I do have the two pics from yourself and Todd ( for which I'm grateful ) I would like to see a pic of my type of coil because when it comes to electrics blowing things up has already proved a bit expensive  :)

p.s. I am getting better, I've managed to rewire the headlight so that the parking light now works and the main beam indicator light now works and I am still in one piece and more importantly so is the bike  ;D

Title: Re: coil
Post by Serowbot on 01/13/14 at 10:28:43

Steddy,.. perhaps posting a pic of your coil would be helpful...
Maybe it ain't stock... :-?...

Title: Re: coil
Post by Steddy58 on 01/13/14 at 10:31:29

OK will do Serowbot

Title: Re: coil
Post by justin_o_guy2 on 01/13/14 at 11:24:57

Coils aint nothin to get wound up about

Title: Re: coil
Post by old_rider on 01/13/14 at 11:43:25


223D3B3C21261727172F3D317A480 wrote:
Coils aint nothin to get wound up about


dammit....silly as it is... it still made me smile ::)

Title: Re: coil
Post by Steddy58 on 01/13/14 at 12:28:41


6C7375726F6859695961737F34060 wrote:
Coils aint nothin to get wound up about

 ;D ;D ;D

Dave many thanks for the info on the wire colours its very handy and has been printed and added to the dossier I am building up on the wiring including the wiring diag. and the safety circuit

Title: Re: coil
Post by justin_o_guy2 on 01/13/14 at 12:46:45

A smile makes hassles a little easier.. & let me assure you, where coils are involved, a smile is all the help I can be,, Its great to have so many people who have the smarts they have, all aimed at this bike.

Title: Re: coil
Post by Steve H on 01/13/14 at 15:06:10

Steddy, I don't know if this will help.  One side of the secondary should ground either through the ground terminal or through the metal mounting bar.  If it grounds through the bar and neither of the terminals, the polarity at the terminals won't matter.  If it grounds through the terminal, the - side will have both the primary and secondary connected.

Title: Re: coil
Post by Steddy58 on 01/13/14 at 15:18:49

Here is a pic of what the coil on my bike looks like http://tinyurl.com/mjvu6mz  (copyright Wemoto - please delete if posting it infringes any laws) when fitted the small spade connection is towards the bottom and the larger one is side on ( and gets in the way a bit when mounting coil ) and ht lead is facing rear of machine and thanks Steve H for your input, appreciated

Title: Re: coil
Post by Dave on 01/13/14 at 18:23:05

Well that clears up a lot of the mystery.  That is an aftermarket part, not a Suzuki factory part.  The + terminal should be connected to the orange/white wire.....the - terminal to the black and yellow wire.

Title: Re: coil
Post by Steddy58 on 01/13/14 at 18:44:05

Cheers Dave ,sorry about causing a lot of confusion hopefully I'll get this sorted and when I've finished I'll post the end results  :)

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