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I have a RedMax EBZ 7150 backpack blower. It runs great but, it has a short in the wires going to the kill switch causing it to die unexpectedly. Is there anywhere I can go online to see a wiring diagram? I would just like to know more before I dive into it.

All the wiring does is ground out the ignition to shut off, so you will have a wire going to the small terminal on the coil, the wire will go to the on/off switch, and another wire will be going back to ground somewhere on the block, usually on one of the bolts that mount the coil.

The internet's best Redmax resource for parts. - Redmax Parts Lookup - Redmax Parts Lookup

Looks like #47 is the wire harness at the coil. Go to the control page for the other side of it.

Why do you think it's a short and not a coil fault?

The most likely thing is an issue in the trigger area, or a place where both wires got pinched and are at times arcing...speaking from past experience. Trace the wires to check they are ok, first job.

I took it apart and found where one of the wires had been cut and splice at least 5 times. I just replaced the wires and it works fine.