If it reads 15 to 20 all the time and even after long hours of use especially with lights off I fear it may overcharge the battery. Theres a chance the VR (if it has one??) may be bad,,,,,,,,,,or someone permanently dead grounded the Gennys FLD terminal cuz Billy Bob and Bubba told them it made her charge real good,,,,,,,,,,,or if it has the LHDB light switch charge control (uses cutout relay) the wire up from the gennys FLD post is somehow always grounded.....or the battery is bad like a shorted cell etc
With a good battery Id expect a high charge rate for a time (if it uses a VR) but then it would back off to 1 to 5 amps depending on RPM and lights etc. If it has the LHDB and cutout relay Id leave it on high charge maybe 30 to 60 mins (20+ amps)then put her on low charge (maybe 1 to less then 10 amps subject to RPM and battery)
Jim was kind enough below to post my Troubleshooting Procedure
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