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What is a proto sounds upgrade kit and what board or boards does it upgrade? Is it a stand alone unit?  I see them for sale time to time but don't seem to be able to find any instruction or installation manuals. One I saw was a MTH PE-407 Alco-5 Diesel Proto Sounds upgrade kit. 

Dan

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It is call a ps3 or proto 3 steam or diesel kit, kit contains the ps 3 electronics to  upgrade an old proto 1 engine or install in any engine that used a dc can motor . the steam or diesel kits cost $199.95 plus $18.00 shipping as mth only used fedex! if you join there member ship club you can buy kit for$169.00 plus shipping membership I believe is $50.00 depending if you get railking or premier membership! the kit gives you all the wire harness lights etc n speaker to install your self or have someone asc tech install for you!

 https://mthtrains.com/50-1912

Alan

Last edited by Alan Mancus
Alan Mancus posted:

It is call a ps3 or proto 3 steam or diesel kit, kit contains the ps 3 electronics to  upgrade an old proto 1 engine or install in any engine that used a dc can motor . the steam or diesel kits cost $199.95 plus $18.00 shipping as mth only used fedex! if you join there member ship club you can buy kit for$169.00 plus shipping membership I believe is $50.00 depending if you get railking or premier membership! the kit gives you all the wire harness lights etc n speaker to install your self or have someone asc tech install for you!

 https://mthtrains.com/50-1912

Alan

The site is for a diesel and I cannot find one for a steam loco on the mth site. Appreciate any insite on the matter. Jim

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