A buddy of mine wants to go back to running points and keep his duel coils and duel plug setup. Anyone have any idea how to wire the coils up ? I'm thinking the wire from the points will go to the neg. side of the coils and then the 12 volts to the positive side of the coils. What do you think ?

 

Not gonna be OK... Dual coils are generally like 3 Ohms some are 5... but, mostly 3...
If you put the coils in parallel the Points will see less than 3 ohms... if they are 3 ohm coils and less than 5 if they are fives... either way... points life will suffer... However... if you have 3 ohm coils, and you wire them in series.. the points will live.
No More Single fire, of course... but dual plugs still light the fire in two places vs one... so yea still an advantage...
I can draw you a schematic if needed... but, points trigger to one side, lets say neg, of one coil, then pos of that coil to neg of second coil, then, 12v on pos side of that second coil... it will be fine.. If one of those 4 tower coils... IDK... I would Not...

BTW if the points setup is dual points, single fire.... just wire it like the dyna-S was...

 

I think i get what you are saying, but his coils are 5 ohm and he's got it wires like i was saying above. Both negs. to points and both pos. to 12 volts. Are you saying this would be wrong ?

 

Sure seems like that's a backwards step, never ran dual coils with points. I have run a splitter tower that plugged into a single coil that used 4 wires, found the points pitted out faster when using it, was actually what got me to go to the Dyna S in the first place.

There's a couple different dyna coil setups and they wire a bit differently depending on what you'r doing and which dyna-s unit is there. Makes a difference including which hole the plug wire from what coil goes where.

May be worth a phone call to dynatek to find out so nothing gets cooked.

 

Better to spend your time convincing him not to go backwards to points. No advantage to points. Yeh I know, "I can fix it on the side of the road". And with points you will need to , with electronic ignition you will not need to fix anything. Once in 10 years thing to fry one, if even then. My opinion, good luck.

 

I can draw a Schematic... but if it has 2 each, 5 ohm coils...it must be wired in series... tho the coils wired in parallel [what you are talking about] it will run...the primary resistance will be less than 5 ohms...and points don't like that... condensers either..
I also personally like Single Fire on dual plugged heads... otherwise... Dual Fire is just fine...and single fire shows No Performance Advantage... with single plug heads..

 

Well he's thinking the Dyna S is bad because it won't let him time the bike. Can't static time it or time it with a light. If he uses a test light it just stays lit all the time. Installed points and it's doing the same thing. It will not let you time it static or with the light. It runs good. He has to have something else going on as the big just went back together after being down all winter. Thanks guys for the help.

 

Sounds more like the advance unit took a **** on him, anybody bother checking that ?

 

Agree... those mechanical advance units still require Maintenance... Points or Dyna-S... For my Youngest... Not a problem, he does the maintenance... the Eldest???? Nope, he gets the "Cup" trigger, and full EI...

 

Yes, I mentioned this to him and he has had it apart and all seems well with the weights , springs and the point cam. He's pretty good with wrenching and has an evo and panhead also. I'm starting to think he must have some kind of wiring problem or ground problem. Damn thing only has about 6 wires running the entire bike. This has got more than a few people shaking their heads
.
I'll post again when he gets to the bottom of this problem.