Oriental Models  NW-2 Phase V Switcher M1 decoder installation

 Photo and text by Robert White

 

I started by drilling out the head and rear light locations first with a 1/16 bit and then with a 3/32 drill bit.  This created holes large enough to accommodate Miniatronics (18-201-10) 1.5 Volt 40mA 2.4mm bulbs.  I used 330ohm 1/4 watt resistors to protect the bulbs.  I replaced the original motor with a Sagami can motor.  The gears and gear tower are original.  I used stick gum to attach the M1 decoder to the top of the motor.    Also used stick gum to hold the bulb wires in place to the inside of the engine shell.

Decoder wire attachments are as follows:

Red wire to front tower (right rail pickup)

Black wire to rear tower (left rail pickup)

Orange wire to orange motor lead

Gray wire to blue motor lead

Blue wire to front bulb lead and rear bulb lead

White wire to 330 ohm resistor to other front bulb lead

Yellow wire to 330 ohm resistor to other rear bulb lead

 

 

I used heat shrink tubing to protect the wire to resistors and wire to wire solder connections.  Also had to use extra yellow and white wire leads to insure the resistors cleared the motor when re-assembling the engine.  Engine was programmed to engine road number 183 and runs great at all speeds but especially at crawl to slow speeds.  Just what a switching yard needs!

 

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