180 degrees out?

Got the wiring hooked up and put gas in the old girl last night after a winter long tear apart/rebuild that turned into a winter/spring affair...but it won't fire.
Everything electric works,starter,horn lights, got spark and gas. But the bike won't fire and backfires after trying.Didn't have time to get into it last night and it's been a long long time since I worked on anything electrical on this bike- 79 MKll.

OK, is it possible to hook up the wires from the coils 180 degrees out or should I be looking for something else ? Changed the coils to 3 ohm.Dyna units with new wires and maybe didn't reattach them in the correct sequence. Didn't have the Dyna ignition plate out of the engine so timing can't have changed.

Not much good on electrical headaches and hope someone here might point me in the right direction.Thanks!

Left-side Dyna-S module signals whichever coil is firing outside cylinders.

Right-side Dyna-S module signals whichever coil is firing inside cylinders.

Good Luck!

You might have accidentally swapped the coil trigger wires.

Remove the timing cover and look at your timing plate. There will be two wires coming out, one from each pickup coil (a black and a white if it's a DynaS). The wire from the left pickup triggers your 1/4 coil, the wire from the right pickup triggers the 2/3 coil - check that the coils are connected accordingly. That is the wire from the left pickup should go to the coil which carries the 1/4 plug wires and obviously the wire from the right pickup should go the coil carrying the 2/3 plug wires.

Edit: Dang Patton, you're fast...

Thank you gentlemen, that's all it was and thanks for your help. Got it running quickly after switching the coil wires.

hey jack dont you just love it when it's something easy. did you get the money order yet.

Jack wrote:

Thank you gentlemen, that's all it was and thanks for your help. Got it running quickly after switching the coil wires.

I took about four semesters of statistics and probability, but I have never figured out how something that has a 50-50 chance of going on the wrong way will go on the wrong way 100% of the time......:laugh: