So maximum load on alternator would be 750 watts/.89% inverter eff. = 843 watts. My Transit shows 14.47 volts with the engine running. The inverter is only used with the engine running. 848/14.47 = 58.26 amps for maximum load on alternator from the inverter.

5. Passive anti-theft system and ignition. Ignition. F21. 3. Audio front control module. Accessory relay. WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market. Ford Transit (2014 - 2018) - fuse box diagram.
A simple test to check the working of the alternator is by running your 2012 Ford Transit Connect ; and then unplugging the positive connection of the battery. If the 2012 Ford Transit Connect stops, then you most likely have a problem with the alternator. Another simple test is to check your interior lights.

One of the primary reasons for engine overheating in Transit Connect is a low level of coolant or antifreeze in the cooling system. Coolant plays a critical role in regulating the engine’s temperature by dissipating heat. When the coolant level is low, there is not enough fluid to absorb and transfer heat away from the engine.

Find the small plug on the back of the alt with the 3 wires on it, and trace the loom back from there. As said, it is in a conduit which you need to strip back so you can visually examine the wires. . 20 4 338 162 224 467 240 32

ford transit connect alternator problems