Question about 2000 Aprilia RSV Mille SP

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Wiring mod done

Voltage now worse!

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I am the proud new 2nd owner of a red 2000 Mille. Love the bike always wanted one deal of a lifetime came up so I bought it. The bike has 18,000 miles on it. I checked the wiring from the stator/alternator and it has been upgraded to 12 gauge wire from the stator to the voltage regulator. BUT, the wiring mod had not been done, so I thought, great!, I'll do the mod myself. Went home last night and ran 2 12 gauge wires from the red black wires at the connector to the 30 amp fuse. I didn't cut the old wires, just spliced two new ones in, as per bossbobs directions. Then I ran 2 12 gauge wires from the red blue wires at the connector to the battery negative. Turned on the bike, and I had 14.54 volts at the battery...WOO HOO!! couldn't check the 4k rpm voltage as it was late and the bike is loud. Went for a ride this morning, checked the voltage before the ride and it was 14.5 at idle and 14 at 4k rpm. NICE! went for a 15 minute ride and checked the voltage when I got home.... 12.5 at idle and 12.1 at 4k rpm....DAMN IT!! I take it this is a heat issue. The regulator gets hot to the touch, but not so hot that you can't touch it...yellow wires from the stator aren't warm at all... before the wiring mod, I had approximately 13.2 at idle and 12.5 at 4k rpm.... tired voltage regulator I hope????, cause I want to get bikepainter's upgraded aftermarket regulator.... Could everyone give me your input please??? not a very good pic of the new beasty,If you are using the on board indicator it's not very acurate. Also these bikes are know for big variations in voltage at anytime. I was told this by David at Acumen in the UK. I check this myself vs the voltage changes on a 2000 Grand Prix. I hooked the acumen voltage reader to the Prix and it stayed at 14.4-14.2, at idle and higher rpms. On the Futura I've seen readings from 17 volts to 12 volts. If you aren't having any electrical or starting problems, don't sweat it. ,,,

Posted on Nov 10, 2008


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