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Step 6 - Installing the Motor Wires to the Decoder
At this point, you have soldered two wires to the copper tabs coming out from the motor. 
  • Trim the ends of the two wires so that there is no more than ½" of wire coming out the side of the decoder - just enough to insert the wires into the solder tabs on the decoder. 
  • Strip about 1/8" of the plastic insulation.  Be careful!  Better yet, use your soldering iron to melt the insulation. 
  • Tin the ends of the two wires and bend the ends at a 90 degree angle. 
  • Using a pair of pliers, insert each of the wires through the bottom of the tabs on the decoder for the motor wires. 
  • If you don't remember which one goes where, don't worry. 
  • We have a little "test light circuit" that you can easily fabricate to help you out. 
  • For the moment, bend the ends of the wires over the solder tabs
  • Don't solder the motor wires to the decoder tabs yet!
Step 7 - Installing the Pickup Wires to the Decoder

Remember that we previously prepared the 4 pickup wires. 
  • Tin the ends of each of the 4 pickup wires.  Be generous with the solder so that a blob of solder is on each of the 4 tabs.
  • Cut 4 pieces of 3/16" shrink tubing about 3/16" long
  • Slide each of these pieces over the 4 pickup wires so that they are out of the way of the tinned pickup wires. 
  • Holding the end of one pickup wire with a pair of pliers, place it on the solder tab on the decoder.
  • Apply solder and the soldering iron.  Don't linger too long!
  • Repeat the same step for the remaining 3 pickup wires. 

Now that the 4 pickup wires are soldered to the tabs on the decoder, the exposed ends of the pickup wires and the decoder tabs need to be insulated.  This is what the shrink-tubing is used for.
  • Move the shrink wrap tubing onto the soldered tabs of the decoder so that the tabs are covered. 
  • Gently heat the shrink tubing with a butane lighter.  Don't linger too long.  It is best to apply heat several times, rather than all at once. 

Your decoder has now been installed!  Read you command station instructions on how to program locomotive numbers.  Fire up your command station, program the locomotive number into the decoder, and run it up and down the tracks. 
Next, we show you how to install some lights, solder those loose motor wires, and refit the locomotive shell back onto the chassis.