So, both the lifepo4 and agm batteries are showing 13.2 volts on the multimeter. Took it out a spin with the agm installed (because that one will start it) to see if it do anything funky. Right front turn signal still won't come on, bulb is good so will have to check continuity on the wires eventually. In the mean time she threw a new code at me b1151 (bank angle sensor to ground), where the hell is the bank angle sensor? I can't find anything online showing it.