HEEEELLLLPPPP no matter what I do I blow 1.5 volt bulbs

[Lester Perry]

I use the resistors recommended by the decoder company and blow the bulbs. Then I try what worked in another locomotive and blow the bulb. I have more with no lights than with lights and I am running out of bulbs. I am not buying any more bulbs until I find out what I am doing wrong. With DC I used a bridge rectifier to reduce the voltage. can this be done with DCC ?