docc Posted 1 hour ago Posted 1 hour ago 10 hours ago, Sam P said: Update from yesterday evening: Plugged relay 2 back in. Battery terminals read 12.7 key off, 12.6 key on, 13.0 when I took it off the tender about an hour ago. On 9/12/2025 at 2:04 PM, Sam P said: Have been hanging out here since February - trying to learn stuff - when I bought a nice low mileage 2001 V11S. Rode 6K fun miles between then and August, with no drama, and then the charging system started acting up: first overcharging and destroying a new Odyssey battery . . . Let's talk batteries, @Sam P. Did you replace the "destroyed Odyssey" with another Odyssey, or something else? A voltage loss from 13.0 to 12.7 in an hour is not a good sign for an Odyssey. There are specific parameters to "condition" the Odyssey that may help contribute to a solution. "trickle chargers"/ "tender" are known to be damaging to the Odyssey battery unless the voltage is adequate, yet will not "charge" the Odyssey with sufficient amperage (at least 6 amps). 1
gstallons Posted 1 hour ago Posted 1 hour ago SamP , did you reconnect the red/green wire to the V reg ? Also , there should be continuity between the 2 pin connector consisting of a blue wire and a red/black on the regulator wiring harness of the bike wiring harness.
MotoKnee Posted 1 hour ago Posted 1 hour ago Mostly for helping myself to understand the circuit and the suggestions for troubleshooting, might be of help to others. If someone sees errors, I will correct them. 2
audiomick Posted 1 hour ago Posted 1 hour ago Mea culpa: I just realised I didn't do the math to the end here I've corrected myself there, and here
docc Posted 31 minutes ago Posted 31 minutes ago 32 minutes ago, MotoKnee said: Mostly for helping myself to understand the circuit and the suggestions for troubleshooting, might be of help to others. If someone sees errors, I will correct them. Nicely simplified schematic. Just a note, that the red/black output from "Headlight" Relay (#2) does supply the brake light (also horns), but not the entire left switch cluster (i.e.: not the turn signals). Perhaps Fuse #5 (F5) should be indicated ahead of the Starter Relay. Turn signals are Fuse #7 (F7) 1
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