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  #1 (permalink)  
Old 01-28-2021, 07:34 PM
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Join Date: Dec 2011
Location: O'Fallon, MO
Posts: 12
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Ultima 18-533 Coil Power Issue

I have my boardtrack ready to fire up and I had no power from the harness module to my coil when the switch is turned on. I have the 18-533 Ultima harness assembly.

I was able to get fire to the plugs by adding a jumper wire from a switched 12v supply to the coil power terminal. But that's not right and I doubt that my kill switch will work correctly with the jumper.

Here's a section of the wiring schematic that shows the power to the coil as a white with black stripe. Lower right corner of the picture. I have that wire run directly to the coil 12v power terminal. When I power up the bike, the white with black stripe wire is dead.

Anyone have this issue?



Here's the coil wired up.



Thanks in advance.

Dan
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  #2 (permalink)  
Old 01-29-2021, 08:12 PM
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The wiring for the right side handlebars was not too clear and I used a push button in my BDL controls for the KILL button. It should have been a rocker switch. I found that if I held in on the button that I have 12v power to the coil, problem solved. I hid a small toggle switch under the tank as a second safety that's actually the KILL switch. I'll just leave it on and use the main switch to start/stop the motor. If necessary, I can easily reach the hidden switch while on the seat.

As for the single front cylinder firing only, I did a complete check on the coil and it ohm'd out correctly and both sides were identical in resistance.

I replaced the coil and I now have both cylinders firing niecely. Go figure a brand new 11 year old coil going bad on build startup.

Thanks, Dan
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