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Ign fuse pops when key turned.

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Old Sep 26, 2011 | 11:11 AM
  #1  
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Kevin01Z28
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From: Fort Polk
Default Ign fuse pops when key turned.

This is on my brother's 96 Heritage Softail. Just like the title states, as soon as he turns on his key the 15a ignition fuse pops. Recent mods were apes and lizard lights, but the bike was riden for a couple of weeks after the install without any problems. He got the apes from HCC and I believe he purchased the prewired setup. I figure something under the gas tank got shorted...any opinions/comments welcome.

Thanks
 
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Old Sep 26, 2011 | 11:33 AM
  #2  
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Sometimes wires get scuffed during repairs or the solder joints/crimps don't hold up and things short out. When you put on the apes did you run the wire internal or external, did you have to disconnect/cut wires to the grip switches.......and then repair either buy solder or crimp. Last time I worked on my grips I pinched a wire and every time I turned my right blink on a fuse popped. Start with the wiring in the grips/apes. Fuses pop as a direct result of too much current (obviously) usually because 12V is shorted to ground.
 
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Old Sep 26, 2011 | 11:43 AM
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Check wiring inside the switches. Possible the throttle cable was rubbing on something and finally wore through the wire casing now causing the short
 
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Old Sep 27, 2011 | 11:34 AM
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Bike is a 2002...no idea why I said it was a 96, sorry. The apes he purchased were prewired internally from HCC, so all he had to do was lengthen the pigtails that came out the bottom. I had nothing to do with the install lol.. Thanks for the replies
 
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Old Sep 28, 2011 | 06:22 AM
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LocoPilot750
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Last time I screwed with wireing, I used shrink tube to bundle several wires. One of the soldered connections had a little piece of wire sticking out sideways toward the other wire.When I put the heat gun to it, it shrunk down so tight, the wire penetrated the covering on the wire beside it causing it to short & pop the fuses. It was hard to find, because the install looked so neat, I couldn't believe it was under the shrink tube.
 
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Old Sep 28, 2011 | 08:06 AM
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You have a wire grounding on something metal somewhere. Probably in the bars if you just installed them.

Drew
 
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Old Sep 28, 2011 | 12:52 PM
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For clarity, does the issue happen when he turns the power on via the tank or does it occur when he hit's the start button?

If it's the start button:
When does the fuse pop, as soon as he hits the button or does he hold the switch for a moment until it pops?
- If he holds the switch for some time to prompt the fuse to blow it's likely your starter or a relay. Epecially if you aren't hearing the starter turn while you are holding the button.

It's likely your wiring and as stated before it's likely a short ground. Back track till you find the problem. Start with the splices your brother made to attach/lengthen the leads. Check and ensure all splices are intact and covered with shrink tube. If that checks out pull the wires from the bars and check them. Lastly check the wires within the switch housing.
 
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Old Sep 28, 2011 | 12:57 PM
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unplug the connectors under the tank from the handlebars, turn on ignition, does it pop? Yes, keep looking for a short somewhere else, No?, then plug in one at a time and trace it back to the problem when you find the one that causes the short.
 
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