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Black Bomber not charging

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Bryanj:
If you look at the coil diagram posted earlier one pair of wires has just two coils and the other pair four coils(when link disconnected) now assuming all the coils are the same the resistance will be different, in theory i would hope themanual had numbers BUT you need a good meter as the readings will be low

AshimotoK0:

--- Quote from: Bryanj on May 21, 2021, 08:40:23 AM ---If you look at the coil diagram posted earlier one pair of wires has just two coils and the other pair four coils(when link disconnected) now assuming all the coils are the same the resistance will be different, in theory i would hope the manual had numbers BUT you need a good meter as the readings will be low

--- End quote ---

The daytime/night-time coils are wound from different diameter wires I believe Bryan. I will check what the resistances should be later as at work today.

Bryanj:
Working on the fly here Ash as ive never done a 450 and very few 500twin

royhall:
I have been back in the garage and had a look at the wiring. Due to brown becoming pink I had two wires reversed, but surely there would have still been a detectable voltage to the battery. Whilst it was apart I got the following readings:

Resistance
Pink to Yellow is 1.9 ohms
Pink to White is 1.4 ohms
White to Yellow is 2.2 ohms

Running voltage
Pink to Yellow is 21 volts idle and 49 volts revved (open circuit)

Battery voltage
12.69 volts engine off and 12.73 volts with engine revving

Amperage
Measured between battery live and live lead
1.5 amps with engine revved (lights off)
4.1 amps with engine revved (lights on)

Do any of the above figures look correct. I was expecting more amps with the lights off looks fairly poor. Does this mean the battery is now charging since I have swapped the two cables?
Also, I don't know if this is correct but I disconnected the red output from the rectifier and measured the voltage between that and battery negative and it was 27 volts (not sure I did that correctly so it may be meaningless).

Bryanj:
Is that +ve amps? If so its fine. Due to the way the charging system works you wont get high numbers

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