Thank you Jeffrey and Jerry
Dagarwal

Thanks Jerry. My layout is not very large and I do not plan to run more than 2 locomotives at a time. I have two ( right and left) Bachmann dcc friendly single crossovers and I am not sure if it is decoder equipped ( I do not think that it is, but it may well be) but I need a separate  AC source for throwing a switch, actually I need to throw 2 for each crossover.
The crossover has isolated non-insulated frogs. There is a note at the back that talks about powering the frogs, (I do not know how) for small locos. Looking at the available you tube videos it seems to me that I need an auto reverser to prevent a short when using a crossover, no matter what. Please confirm that I do not need an autoreversing module with a separate track power source.
dagarwal01

I am planning to add Bachmann DCC crossovers to my HO layout. What special things do I need for track wiring. I have read a lot of stuff about needing a separate booster and an autoreversing circuit. Is all that stuff applicable to Bachmann dcc friendly crossovers also. I coul;d use some expert help.
dagarwal01