This installation of TCS MC2P-SH-UK Decoder is for HO Scale Stewart F7A Early Phase I and was performed by A.G.

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


Stewart F7A Early Phase I with its shell on prior to the TCS MC2P-SH-UK decoder installation..


Detach the front coupler by removing the screw circled in red.


Detach the rear coupler by removing the screw circled in red.


The picture above illustrates the original light board after the shell removal.


Remove the 8 PIN Dummy plug.


Plug the TCS MC2P-SH-UK decoder right into the 8PIN NMRA socket so that the pin number one is connected with the orange wire of the decoder harness.


Here is a close-up picture of the decoder installation.

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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