Lobotomy planned for an old MTH J- questions on MTH plugs and volume control

1. The connectors are Molex 5264 connectors, Digikey has them.  Speakers are standard 8 ohm speakers, they're available all over the place.

2. Typically, the rectifier (the part you have the screw through) is bonded to the chassis with a heat conducting metal bracket or post.

3. Any 10k pot will work, buying one part from MTH will really be expensive with the standard shipping.

PS/1 is very simple in concept, not much to go wrong in the installation if the board set is working.  Make sure you have a good battery whenever you power it up.

If you send me an email at my profile address, I can supply the connectors and the pot for a lot less than ordering the stuff around.  Just be specific as to which connectors you need.

Thanks John, email with details sent.

The speaker in the unit will work.  No switch for reverse needed with PS-1.  It is done electronically.  MTH has a bracket that mounts the volume pot and also is used to mount to the regulator.  You don't want to use wood.  You need to heat sink the regulator and the rectifier like the aluminum bracket does.  MTH would use cylindrical Al spacer under the rectifier with a long 4/40 screw.  The regulator would have a brass bracket.  Issue is getting the one high enough to clear your speaker.   Also leave room for battery either on it side or under the board if raised.  G

Thanks to all who chimed in with help and suggestions, operation was a success and the patient is a joy to operate.

What happened to the pictures?

You are right!  I should receive a BCR tomorrow and will open it up to put that in and  take pictures and a video.  it has the N&W sound chip and I love that "Powhatan special" part of the announcements.  Unfortunately this thing is getting expensive -since I have no passenger cars for the J..... 

Money is all it takes to fix that.

Looking forward to the photos and video.  For me, it's not "real" until a photo and/or video is posted on the forum--anything less is just talk.

OK, I have to produce the evidence.  Here are a few pictures of the inside of the tender.  I was surprised I kinda / sorta ran out of room and had to put the PS-1 unit at an angle to miss everything. Otherwise something was in the way every time I tried to close it up or there was no good place for the battery.  I also could not find  a good spot for the sound pot either so it has to be accessed by opening the tender too (sitting on double sided tape like the battery).  Otherwise it worked out great.  Sorry the video is a big file but I used an old flip camera- won't do that again!