RMweb Gold Dougjuk Posted April 9, 2017 RMweb Gold Share Posted April 9, 2017 Hi, I have almost finished fitting lights to 2 class 20's, both are 8 pin or were ! I hardwired both of with sound chips a will back so installing the Express lighting kits was relatively easy as all I needed to do was to solder each wire pair. However I am about to start on my other pair of 20's and they are both 21 pin sound fitted so am not keen on solder to the chip itself. Has anyone done one of these and how did you complete it. regards Doug Link to post Share on other sites More sharing options...
SRman Posted April 9, 2017 Share Posted April 9, 2017 I fitted lights to a 21-pin sound-fitted 20. Like you, I wasn't keen on the idea of soldering to the decoder itself, nor anywhere near it. I worked out the pin-outs, and soldered to the bases of the pins on the PCB, with the decoder removed from the loco while I did this. Unfortunately, I didn't take any photos of this. What I do remember is that the space available for soldering on one side of the double row of pins was very tight. It did work though. Link to post Share on other sites More sharing options...
Richard Pike Posted April 9, 2017 Share Posted April 9, 2017 ESU make a 21 pin break out board, it is essentially a 21 pin socket with wires attached, you can use this to replace the existing socket on the loco. Available from Digitrains and other good DCC stockists. Link to post Share on other sites More sharing options...
RMweb Gold Dougjuk Posted April 10, 2017 Author RMweb Gold Share Posted April 10, 2017 thanks guys I was thinking about soldering to the pins but will now look at the breakout board. Link to post Share on other sites More sharing options...
pauliebanger Posted April 10, 2017 Share Posted April 10, 2017 thanks guys I was thinking about soldering to the pins but will now look at the breakout board. Doug, Save your money, here's what you do: Kind regards, Paul Link to post Share on other sites More sharing options...
SRman Posted April 10, 2017 Share Posted April 10, 2017 Thanks for posting that pic, Paul. That's exactly what I did with mine. It also illustrates what I said about the clearance for the soldering iron being tight at the top of the photo. Link to post Share on other sites More sharing options...
RMweb Gold Dougjuk Posted April 12, 2017 Author RMweb Gold Share Posted April 12, 2017 fantastic, many thanks will do as you have shown Doug Link to post Share on other sites More sharing options...
RMweb Gold Dougjuk Posted April 20, 2017 Author RMweb Gold Share Posted April 20, 2017 Hi Guys, Well that's one down and one to go. I must say the 8 pin version was a lot easier you are so right about the soldering it was a real fiddle. Took me longer to sort that than the actual fitting of the lights. The Express models kit I used had wires that were a little too short so I had to extend from the chip end so I could put the board over the motor. I will tackle the other one later next week. Link to post Share on other sites More sharing options...
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