I know for a fact that the purple to the + is indeed reading full voltage.
Why I'm not overly concerned about this 11.5V is because the BMS probably uses a resistor of a known value (100 Ohm?) or a small load to calculate the voltage? Hence the voltage drop?
Also, the purple wire at the BMS is entirely internal as well! All I can say is the ground to the BMS seems solid and its getting full + voltage.
Only way to be certain is to have a donor vehicle to test the same conductors....
And maybe the alternator output is suspect... Actually, I'm pretty sure it is suspect. Weeks ago I was seeing over 14V at idle. But weird that I still had charging fault with new battery and charging at 14+ volts!
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