PS 1 Locomotive conversion to TMCC Where do all the wires go.

A "AC Commander" will not work with a can motor MTH engine.  You need a "DC Commander" for can motors.  On my engines I replaced all the old lights (and light boards) with LED's. Hopefully someone with more knowledge on ERR boards will reply back to you.

I apologize it is the DC commander. I know that it should be able to handle all of the lighting but it is the constant voltage module that has me concerned.

You can wire the constant voltage module direct to track power, problem solved.  If you want directional lighting, then you need to supply more information.  I typically replace all of that for a TMCC conversion.  The smoke unit can be wired to the smoke output of the ERR board, that gives you command control of the smoke.

You can use the existing PS/1 electrocouplers with TMCC as well.

I was figuring on wiring the directional lighting to the appropriate points on the commander but I don't know what the voltage of the lights as they were being powered directly from the PS 1 board. I have the electro couplers covered as I have hooked those up before.  This locomotive also has lit numberboards. I can replace the headlights with LED but I belive that they are 6 volts.

The incandescent lights that are plugged into that board are all 6V lights.  The LED's for class lights/markers are plugged into a socket that has current limiting, they have no separate resistor.

John, I did what you siggested and changed them to LED which are positioned perfectly to recieve power from the commander. The lights are plugged into sockets on the shell which in turn have springs that touch those plates. I will still leave the constant power board connected to track power. The locomotive actually makes it convenient to connect the lights and smoke unit as the copper padds keep everything low. I didn't notice until last night since this locomotive was made in 1996 it has no lit number boards or marker lights so no problem there. I will post a video when I am done. Thank you very much for your help.

When the copper pads/springs work, they're great.  When they don't work, they're a PITA.

Typical PS-1 diesel have interior and number board lights off the CV Board and they are 6V bulbs.  You might have a track power bulb at 18V.  BUT directional Headlights are powered off the PS-1 board and they are 1.5V bulbs and will not work with TMCC.

Any light you are power off the TMCC board needs to be a 16-18V bulb or an LED with appropriate resistor.

Markers are markers and PS-1 are parallel wired while PS-2/3 are series wired.  Follow normal resistor values base on TMCC voltage or track power.

PS-1 could be off the CV with a 150ohm resistor, or they could be directly off the PS-1 marker plug which has built in resistor.

Just normal lighting stuff.  Match it to how Lionel engines are wired, or leave the MTH CV stuff alone as normal.  G

Actually, in sone of the diesels I've worked on here the headlights are also 6V, and they are powered from the lighting board.  The 1.5V is used to trigger them.  Here's the board I refer to.

After completely breaking down the locomotive inside the only lamps being powered by the lighting board are the interior lamps which are 6 volts, this is an older locomotive so the cab light stays on. There are no marker or number board lights for the same reason. The only thing I wasn't sure about was the output of the TMCC board which I would have put a meter on but thanks for saving me some time. I could control the cab light by hooking the lighting board to the TMCC module and leave the smoke unit connected to the track power but I haven't decided yet. I will put the appropriate resistor in line with each head lamp and reverse lamp. So far the project is coming along slowly as I have very limited time to work on it but I will post a short video when it is done.

What early MTH diesel are you converting? I converted an early Premier SP Baldwin AS-616 earlier this year to ERR Cruise Commander/Railsounds. I just gutted out all the lights/wiring and replaced everything. 

A MTH Premiere AS-16 made in 1996. The CV board only has hard wiring with no plugs.

RRAddict posted:

A MTH Premiere AS-16 made in 1996. The CV board only has hard wiring with no plugs.

Same locomotive I did. It just had 2 cab lights and a head/reverse lamp. I replaced them all with 14 volt bulbs wired to the Cruise commander.

I typically replace headlights with LED's.  The focused light makes them look a lot more like real train headlights.

gunrunnerjohn posted:

Actually, in sone of the diesels I've worked on here the headlights are also 6V, and they are powered from the lighting board.  The 1.5V is used to trigger them.  Here's the board I refer to.

Yes the F and E and trainmaster and a few more.  But the traditional Diesel like the one he is talking about uses does not use a board like that.  They have a double 1.5V off the PS-1 board.  G