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1979 Yamaha 1100 XS


studly256
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Can someone tell me how if possible to test a Ignition Unit?

(Ignition Unit is the Black box with two plugins one large 8-10 prong plugin & one small 4 prong

plugin . location mounted under the seat)

The large plug to the ignition unit I'm getting Power(Current).

The small 4 prong plug I'm getting no power out of all 4 wires.

The small 4 prong plug from the ignition Unit does it go to the distributor?( I call it a Distributor.

it could be called a pickup coil,all I know is.,Is that it spinds and has two looks like electronic points

Looks like Electronic Ignition Distributor).

I bought a new wire harness and all the plugs seemed to match up with color code except the

4 prong plug going from the Ignition unit to the Distributor.The distributor wires the only wire matches is the baby blue wire.

Can someone tell me if the disributor wires go to the Ignition Unit box?

And also, How to test the Ignition unit to see if its bad?

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