Proto 3 upgrade with slave

This  PS2 upgrade info from my website section may be helpful.

Upgrade UP #80 Coal Turbine   MTH #20-2214

Adapt #80, #80B, and Harness for the Larger PS2 Harness and Connectors

Harness Connected and Installed Ready for Splicing for Longer Wire


Front Truck Bottom with Cable Run


As Built Notes and Blank Checklists  bottom of this section. (shared by a TCA member.

The PS/3 slave boards only persisted for a few years when PS/3 came out, then they transitioned to having any powered unit having it's own PS/3 board.  I don't think there was ever a kit for a master/slave for PS/3.

John, that is correct.  I’m looking for a wiring diagram to install the two boards master/slave in the turbine.  I read where a few have made their own harness to accomplish this.  The two kits I have are two 50-1912 upgrade kits and a slave board.  I was told I could use the wiring from both to do the installation.

Maybe George @GGG can help you, I've never seen a schematic for the master/slave configuration.

I have done the PS-2 slaves.  I have not created a PS-3 slave.  Why not make both units PS-3 diesel and run as Lashup/MU?  Do you have a PS-3 slave board?  it is different than PS-2.

You need tach in PS-3 slave.  Need to add a data line from PS-3 board to go over harness to the slave.  G

GGG did the same for me with my F3 A-B sets: make both units PS-3 diesel and run as Lashup/MU. Pass/Freight sounds come out of the lead unit.

Works great in conventional mode too -

I have more for GGG to do too!

I've done several multi-unit PS/3 upgrades, I always use the full PS/3 board in each unit.  I have a slave board spare, but I've never had a use for it.