This installation of TCS DP2X Decoder is for HO Scale Bowser Executive Line U25B and was performed by Patrick Moore

Important Soldering Tip:
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157

  Bowser released their U25B model with the “phase IV” car body decorated in the Erie Lackawanna late paint scheme in 2008


To remove the shell, unscrew the two coupler boxes, highlighted by the yellow circles.  There are no tabs that hold the shell to the chassis.  Simply grab the shell near the frame and pull gently to remove the shell.


The NMRA 8-pin socket is located underneath the black electrical tape.  Remove the tape to access the socket.


Remove the two three-prong metal jumpers (highlighted by the yellow circles) from the socket.


Discard the metal jumpers.  The DP2X decoder is installed with “Pin 1” plugged into the top of the board in the picture


Chassis showing the DP2X decoder installed.  Carefully place the shell back onto the chassis making sure not to break off the bell, then re-install the coupler pockets.

Other solder tips: When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire

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