Im hooking up a RCS Rx65b to the Forney plug and play.  Im using the the provided board to wire an aftermarket rc.  I got as far as getting the engine to run forward and reverse but I can not get the front lights to work.  I have the white wire from the bachmann board going to the correct wire on the Rx65B but Im not sure what other wire I need to finish the connection?  Is the Bachmann board front light wire + or-.  If I want to hook the cab light what wire should I use. Please see this for more info.   
http://www.largescalecentral.com/forums/topic/24665/-/view/post_id/296547

Does anyone have the dimensions of the 1:20 scale 20 inch boxcars.   Based off pictures it looks shorter then the big hauler 1:22 scale cars.  I know you cant always go by pictures.

This is for the Bach Man or any one else that knows how to fix this problem.   I have a Bachmann big hauler from the tweetsie RR set.  The front lead trucks keep coming off the track.  I tried adding weights to the front and back wheels of the front trucks. I still had problems.  The track seems even no drastic changes in grade or anything.  Is there anything else I could do to correct the problem???  I heard thisis a common problem.  It seems like they need more weight or stiffer spring.  Does Bachmann plan on fixing this problem.  Thanks

I have the Bachmann 4-6-0 Big Hauler.  I broke the little plastic pieces that are on top of the engine.  The gold one that sits behind the bell.  Not sure what it is called.  Anyway how  can I get a replacement. Thanks