Left sinal not working in trailer hook up ?
check fuses under the hood
what is the gross gvw for f350 with 3.73 rear trailer max weight
Ford F350 Super Duty Dually
fuse is in the engine comaprtment fuse box.
Behind center of instrument panel.
5,697, gross trailer weight braked (lbs) and max payload (lbs) 4,299
Alternator has gone or is going out.
A wire could be broken, a relay could be defective, it could be wired into the wrong relay, wires may have become disconnected, the plug itself may be corroded.
Possibly a neutral lockout switch, possibly a bad connection, possibly an ignition switch.
No, the 2003 Ford F350 rims will not fit on a 1999 Ford F350.
Best guess- bad connection in the block that connects the lights.
Yes, the rims off a 2002 Ford F350 will indeed fir on a 1999 Ford F350.