Just a very short guide (mainly of photos) here, to show the swap of the factory PCB in this awesome Heljan Western, for a Zimo
MX699KS sound decoder. Note the plastic base added for the decoder to sit on, and resistor arrays for the lighting.
YLR603010 speaker is in the fuel tank (not shown)
Please note that these guides are provided as useful resources for you, as-is. YouChoos cannot be held responsible for
errors in the information, or for any damage caused to your models or equipment if you choose to follow any of the
steps detailed here.