Question about 2004 Aprilia Tuono Racing

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Electrical Help Please

I bought an '03 Tuono last weekend from a friend. Before he handed the bike over it began to have some electrical issues. First time it's done this. When I turn the key on I get zip... Nothing

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Nada. No gauges no lights absolutely nothing. All that happens is when I turn the ignition switch off the tach bounces backward quickly about 6 or 8 times. I put the bike on the battery tender and within 20 minutes it was showing in good shape. Still nothing. Checked battery leads. No problem. I checked all the fuses around the battery and up next to the dash. Nothing there. I R & R'd all of the relays next to the dash and the 3 behind the tool kit with the same relays off of my Mille. Still nothing. I changed the odd relay next to the battery that says UP on it. Don't know what it is but it rattles. Maybe a tip over sensor? Nothing. I tried jumping the bike off with a portable jump start battery. Nothing. I switched the battery out. Nothing. I pulled the front fairing and checked all connections. Found everything to be just fine. Put a battery charger on the fully charged battery and suddenly got ignition lights and headlights. Turned the key back off and once again nothing. A few more times it would come back and show lights and gauges but when I went to start everything went dead again. I'm thinking maybe the ignition switch? It doesn't seem worn out at all. I jiggled the key didn't seem to make a difference. The bike only has about 10k miles on it. Any ideas? ,Some 'friend'... did this ever happen to him? Good diag work so far, and I don't have anything specific to look at. Hopefully one of the sm-m-m-marter members can assist. ,,,

Posted on Nov 10, 2008


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