Topic: Need help wiring up my accel coils

[A Grove]

Hey all,

I picked up these coils used from a buddy for my bike considering my old spark plugs + stock coils were garbage.  now, I know which coil goes on which side of the frame and which plug to which wire, etc...

but I am very dumb at wiring.  I have two different sets of leads, a set of black/white and blue  and a set of black/white and yellow.  now... which color goes to which coil and does it matter what terminals the wires get put on? 

I hope you all can understand me lol trying to fire up my bike tonight so any help is appreciated.

[TwoTired]

Blk/wht goes to Blk/wht in the wire harness for both coils.  It is power to the coils.

The 1-4 coil should have the Blue wire, which routes to the 1-4 points set.

The 2-3 coil should have the Yellow wire, which routes to the 2-3 points set.

If you have a 550, and the accel coils have 3 ohm primaries, be prepared to recharge your dead battery after riding... frequently.

[A Grove]

How can I help that problem?  I've always known of it, but is it THAT bad? I never use elec. start.

[TwoTired]

It depends on how you ride the bike.  If you never let the engine run below about 3000 RPM, you'll probably be OK.
If your remove some other electrical loads from the stock bike, that will help.

The alternator only makes about 50 W at idle, and the stock bike consumes 110-ish watts whenever the key switch and lights are on.  The difference is made up by what is stored in the the battery, so it depletes at about a 60 watt rate at idle.  When the engine is revved to 5000 RPM the alternator can make 150 watts, with about 40 watts available to restore the battery at that RPM.
The 3 ohm coils may draw 20-40 watts more than the stock 5 ohm coils, leaving little available to recharge the battery.

The 750's 210 watt alternator can take the extra load of 3 ohm coils.  The 550, not so much, without major changes in lighting load reduction.