Help on Coil Wire Connections

I am rebuilding 1980 KZ550A and installing new coils. The bike only had one to begin with and the new coils didn't come with the soldiered wire connections the old one had (see photo). I am making new wire connections and I would like to know if I can assume that the new coil connections are the same as the old coil green wire from points on the right and yellow/red power wire on the left?



The wiring diagram also shows that the left points for #1 & #4 has a green wire while the right points for #2 & #3 has a black wire. My bike (see photo) has black wire on points 1 & 4 and green wire on points 2 & 3 so I am assuming these are wrong. Is it okay if i leave the points and just ensure the black and green are connected to the correct coils and plugs?



Thanks Tomas

Read this:

Kawasaki Ignition Coil Primary And Secondary Wiring

Ignition coils on the 80’s Kz1000,Kz1100’s and Gpz1100’s are wired the same, that is as you sit on the bike, the LEFT ignition coil primary(small wires) are two wires, RED and BLACK. The secondary (or sparkplug wires) go to #1 and #4 sparkplugs(your primary wiring may be different). NOTE, the 550’s,650’s,700’s & 750’s are backwards to what is listed for the bigger 4’s.

The cylinders are numbered left to right as you sit on the seat; #1,#2,#3, and #4.

For the RIGHT ignition coil, the primary wires, again are two wires, RED and GREEN, with the secondary going to #2 and #3.

The RED wire gets it’s voltage from the run/stop switch on the right handlebar switch pod. Your primary wiring may have a different color.

The BLACK and GREEN wires connect to the IC Igniter(if the bike has the Kawasaki supplied electronic ignition) it actually gives the coils their grounds to fire the sparkplugs.

Primary(small wires) may be 3-4 ohms, but the secondary(sparkplug wire side) could be 14 K (14000) ohms.

The sparkplug caps should read 5K OHMS(5000), any higher, or a reading of infinity means new caps should be ordered.

To stress the ignition coils, take a hair dryer, heat the coils and see if the ohm readings change from cold to hot . If they do, it’s time to buy new coils.

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Keep in mind, the wiring is reversed for the 550’s, 650‘s, 700’s, and 750‘s, that is the RIGHT coil primary will be two wires, RED and BLACK with the secondary(sparkplugs) going to #1 and #4.

The LEFT coils primary wiring would be again two wires, RED and GREEN, with the secondary(sparkplugs) going to #2 and #3.

These engines have what is known as a “Wasted Spark” that is, a sparkplug will fire during an exhaust stroke. It does no damage and many other motorcycle engines have this design.