Want to check if I am going to be doing something unsafe, please let me know if this is okay for 2003 E350 EB 15 pax V10, alternator is Super Duty 135 Amp or ?? (is there a way to tell??)
I will be adding two AGM 12V house batteries on the passenger frame and want to use the 2006 Diesel van wiring harness I have.
Wiring is proposed as follows: Connect the diesel harness heavy gauge wire to the starter terminal in order to tap into alternator 12V charging (this is the wire that ran to the starter in the diesel factory set up). This heavy wire will run directly to a Marinco 701 Battery disconnect switch mounted so the switch handle is accessible from inside the van (barn door foot well). This is so I can isolate the House and engine batteries when camping, or have them connected when running so house batteries are being charged as well. From the Marinco switch, heavy wire to house batteries.
For power supply to the inverter, there is a smaller gauge red wire,( which I think has a fusible link (two gray wires) inline) that normally ran from the batteries directly to the diesel fuse box. In my application I would utilize this red wire to run from the house batteries to my inverter which is currently 1000W but will likely be replaced with a 1500 to 2000 watt unit.
The questions are -
1. Can I tap into engine charging at the starter terminal, or is it preferable/safer to tap into the system at the engine battery positive terminal?
2. Is the BEP / Marinco 701 switch the proper choice? Hella ??
3. What size fuse should I locate near the house batteries or is the fusible link in the harness enough protection?
(Want to keep it simple and do not want the solenoid solution)
Appreciate any guidance, need to get this done for the NorCal 4x4 trip