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I did the mod this morning on my 03 Sprint (with Datel voltmeter).
I used 12 ga stranded wire and soldered the connections, then used proper crimp ring terminals on the battery connections.
Went out for an 80 mile test ride, some local riding, a good stint at 75, then more local.
I've gained a full volt (13.6 to 14.6) with no accessories on. Still, at idle, the voltage can drop to 12.4-12.6, sometimes even down to 12.2. As soon as I move out the voltage begins to climb - slowly - eventually reaching 14.6 at 4000-4500 RPM. I NEVER saw more than 13.7 before this mod.
When I turn on my driving lights - 35W X 2 - the voltage drops right down to 13.4 but then gradually moves down into the 12s, eventually reaching down to 12.4 even while moving. At idle it will get right down to 12.0. Moving out again it will climb, but may take a while to get up to 13, if it gets there at all!
I think I need to measure the current draw of these driving lights!
Anyway, quite an improvement for a bit of wiring and a fuse.
I assume the voltage only goes TOWARD the battery from the rectifier so there's no concern about it being connected full time to the battery?
Thanks for the tip. Stuart
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