Adding LED interior lighting - Voyager

[SimulationNetwork]

Hi all, I have recently aqqiured an XC Class 221. On my VT 221, it is fitted with an illuminated models LED kit (3x decoders). That came out to be rather expensive. With my XC 221, i would also like to convert it to DCC but by using 1 decoder only. I have purchased a DCC socket for my XC 221 and I wish to add LED head/tail lighting myself without the use of a kit and less decoders to keep costs down. I will be using micro-JST cables to carry current from centre motor coach through the whole train. I was thinking of conductive couplings but the Voyagers coupling pockets are not nem. In addition, I would like to add LED interior lighting. Now, for the interior lighting strips, will the lights require contact pickups on each set of wheels or can I just use the current from the JST cables only? Thank you for reading. 

Edited May 17, 2021 by SimulationNetwork