Proto 1000 RDC
T1 decoder Installation

Photos and text by Robert E Petit,  Merrillville IN,  Duneland DCC

Begin by removing the shell from the frame.  Remove the couplers from both ends, and there are two screws at each end of the frame near the inboard side of the trucks. These are the only screws that need to be removed to separate the body from the frame


There are three places on the circuit board where there are traces that need to be cut. I usually make two cuts, one on each side of the “X”. I then remove the foil material to make sure that there is no path for current to “sneak” passed the cut.


I then mount the decoder using a small piece of double stick tape. This model was an RDC-3 with a Baggage/RPO end, and I made sure that the decoder was not visible through the windows. After the decoder is mounted, trim your wires to length. Leaving a little extra, just in case when you strip the wire it breaks off on you. Strip, tin and solder in place.  There is only one more thing to do to make your install complete. To make the lamps brighter I soldered a 330 ohm resistor across the resistor (in parallel) on the circuit board. Replace the body shell, and couplers, program your address and you’re all set to go!



P1 Orange
P2 Yellow


P5 Grey
P6 White
P7 Blue
P8 Red


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