using PS2 board from steam to upgrade diesel?

None at all, the boards are identical.

 

That's what I needed to know.

If you are taking that board from a RailKing Pennsy 2-8-0 and using it in a Reading diesel, that is a conversion in more ways than one.

 

Keep up the good work!

The board is the same, however there's a bit of wiring to do.

 

Shouldn't be too difficult;  splitting the power leads for the 2nd motor, adding wires for the rear light.  It's a Weaver C-630 so I'm not going to concern myself with number boards or markers, at least not right now.

It's not that difficult to do a diesel to diesel transplant, but if the board is in the tender steamer, you just have a bunch of wiring.  If it's in the locomotive, it's closer, but still stuff to wire.

It's a C630, so room isn't a problem.

I've done the reverse, using a diesel kit to upgrade a steam switcher, to get the 2 couplers.

Yeah, I'm not sure how easy it will be to adapt the PS2 couplers to a Weaver diesel.

Wowak, I upgraded a Weaver C630 to PS2, right after the first upgrade kits were released.  I don't remember how I tackled the couplers, which may mean that they weren't a problem.  To this date, that loco is one of the best running locos I own.  I also did a Weaver SD40-2 at that time, and also don't remember any problems with it, other than the upgrade was a bear because of the narrow body.

I think I'd rather have had the tether, adding a coupler connector is a lot easier than wiring up the whole tether.  The couplers are easy to get, the tether is more expensive than a coupler.

Was a tiny loco.  Wasn't about to switch out or control the Seuthe smoke unit.  No room for the 10-pin tether socketUsed micro connectors

That sounds like a pretty unique case.  In general, if I'm doing a steamer, I'd rather start with the steamer wiring harness, less work.  Same if I was starting with a diesel...

 

 

Very unique.