Man oh man what a goose chase I have been on....
First things first I got knowledge on voltage drop, awesome!
So I started looking for the source of my voltage drop, 0.23 volts lost at the main switch, 0.13 from a bad fuse, 0.13 from the earth.
Cleaning all these and adding a new earth, reduced my drop to 0.2V much better. Still chasing pennies IMO.
I put it all back together, and re-wrapped the harness etc. Had to wait till tomorrow to test bcause it was night time by the time i was done.
Fired it up this morning, still the same 12.6v when idling no headlight. 12.90V resting ignition off. WTF!
I was trying to keep the original connectors because it would be cleaner wiring, but screw it. As scotch suggested and the instructions with the rectifier suggest. I went strait to the + & - of the battery. Surely this time. Fingers crossed.
Fire it up and still 12.60v idling 12.90v resting. goes down to 12.3v it headlights etc on. At this point things just suck.
Decided to investigate the amperage output;
The bat at idle is is draining 5amps and only goes into the - which would be charging? when above 2k rpm.
About 9 amp with high beam and the rest of the lights on.
During all this testing the alternator wires where relatively cool, not really even warm.
I keep chasing things for another hour and testing to no avail.
Light Bulb moment. I have a working bike, lets hook this rectifier up to its system to make sure it works correctly. Bam 13+volts when idling with headlight on going up to 14 when raising rpm's. Awesome!
Decided to investigate the amperage output on the carb bike;
The bat at idle is is being charged for 5 amps with no lights on, get charged about 2 amps with lights etc on.
During all this testing the alternator wires got warm to the touch, same with the regulator.
I actually think this regulator is on its way out? because when revving it will go to 14.8 volts.
Alright what about if we hook the other bikes alternator up to the new rectifier, which has its output directly to the battery of the DFI Bike.
13v at idle no headlight.
well I'll be dammed. not perfect, but its something.
Currently I am thinking I have an issue with the alternator on the DFI Bike. After checking the AC Voltages and at idle 1 pin is giving 15v AC other are putting out 10-11.5 ish.
What are your thoughts on this fellas?
Or any other test I could do to confirm things further.
Cheers.