Plug wires...is this possible?!

I'm about to replace my coils/plug wires, so I've been doing some reading. According to most (well, actually all) of the stuff I've read says that the left-hand coil spark cylinders 1 & 4, the right sparks 2 & 3. But, looking at my bike, the left is feeding 1 & 2 and the right 3 & 4. The plug wires even have little shrink-wrap labels that look like they come form the factory. And on top of that, the bike was running with the plug wires like that!! Does this make any sense? Should the bike be able to run with the wire in the wrong sequence? What is the correct wiriing for the coils/plugs?

Thanks,
Dean

 

One coil fires plugs #1 and 4, and the other coil fires #2 and 3.

However, given that Yamaha uses a "lost" or wasted-spark method of coil firing, it may be that................wait, that wouldn't work, either.

Are you sure that's how yours are actually ROUTED (as opposed to labelled)??

 

The Coils fire 1 & 4 ... and ... 2 & 3!
That's the "Firing Order"
That's the way the Engine is TIMED!

The Pistons and Valves are in a sequence that only allows the Cylinders to Fire in that order.
You can't have the Plug wires on wrong and expect the engine to perform right.
It ain't going to happen!

Maybe someone slipped the Numeral Indicators around or something,
Your Bike is wired wrong and not running right if the Plug Wires are mixed-up.

Take a razor blade and cut the Numeral Tags off the Wires and wire-it-up right.

The Left Coil fires 1 and 4
The Right Coil fires 2 and 3.

Try hooking it up right and see if it don't run better than it does the way you have it ... which, I suspect ... is the right way if the Engine isn't missing and backfiring.

 

Someone (OK, it was me) wired my bike up wrong recently after removing the coils and stuff to dry the bike out after a rain storm and to rebuild the carbs. It ran like it was dying a gruesome death until I swapped the wires back to the correct plugs.

Do it like Rick says and you are golden.

 

Chacal was right...I wasn't looking closely enough. The plug wires were crossing up under the top frame tube.

Thanks!
Dean