Hello, I have a Bachmann DCC Sound Value Alco S4 and when in operation, would often stall over switches, which are mainly Atlas Mark IVs. I don't really want to spend the money to replace all the switches right now so I would like to install one of those Keep Alive capacitors onto the decoder board, but I don't know how. I was wondering if anyone on here had any success installing a Keep Alive on a similar locomotive using the same Sound Value decoder board and if so, how? Thanks.