Alternator, Leece Neville 160 amp to Delco Remy 28si

The important thing is to find an alternator AND hook it up properly for how your coach is wired.

All alternators have: B+ lug-- the large-gauge wire for 12 VDC positive.

Some have a ground lug, others ground through the mechanical attachment to the engine.

Some have an external sense terminal/wire-- critical if you have a diode-based battery isolator.

Some have an "ignition hot" excite terminal/wire

So, first step if to verify how your present alternator is wired. Only deviate from that on very sage advice!