Been using multimeters since 1958

But the replies here have simplified my task

Tom
Thanks
I agree that is what I will do

I was confused as to whether it was an isolated motor
Happy to hear it was


It is easy to see the power pickups as to left and right ( can't believe Bachmann used motor red to tender black and motor black to tender red

Any way of knowing whether the light is LED or Bulb

BTW I did install a sound decoder in my Bachmann 2-8-4 but that was DCC ready and color coding was correct
I did burn out the LEDs though--replaced and did add resistors

Here is what I think the leads are
Sure isn't NMRA color coding

http://bandb3536.com/PRR/pcboard2.jpg

Doesn't  look like any DC ready board that I have ever seen
Of course you say first generation
Are you saying that small brown Bakelite piece  with the two big solder blobs comes out and a socket is underneath

I agree on the wires
The main question is is the motor isolated
I guess using an ohm meter on the 2 engine wires and reading each against the frame should tell me
I know which are the engine wires if  I assume the light is the 2 wire plug

I forgot to show this

http://bandb3536.com/meo/pcboard.jpg

Thanks for the info

Does anybody know if the motor is is isolated  in the Bachmann PRR K4 NON DCC ready engines

I want to put one in and have the engine unplugged the tender open when it dawned on me that the motor might not be isolated

I don't want to open up the engine so I sure hope it is

PS the color coding in the tender leaves much to be desired

I applaud Bachmann for this move
Prices were getting ridiculous for the average modeler

I know from other sites there are those that buy 3 EM1s  etc but for the average RR modeler the new Sound Values are great

Well on the MRR site you can click on the pic to get the Original size that was uploaded
That is what I want and meant
Not trying to enlarge a pic that was small to begin with

Don't need those extra sounds as I just have mine starting and going round and round
Exhaust whistle and headlight and standing at rest sounds are all I need

Like the lower price

Does it make it larger if the original picture as uploaded was not larger

Wish this site allowed bigger pictures or the ability to click on the image to get bigger pictures

As others posted
THE 2-8-0 IS A GREAT CHOICE
So would the new 2-6-0s
Both operated  to the end of steam and go well on 18"
I guess you already have the track but a 4x8 can handle a 22"

Just visit the Strasburg RR where they run them regularly
They keep them pretty clean
You can see them here
http://bandb3536.com/strasburg/strasburg.htm

At first I thought the Belpaire boilers were ugly as all get out
But now that I read more and more books on the PRR and visit the RR Museum of PA I have come to really like them