How do I install a Soundtraxx decoder to a Bachmann motor (# F4OPH H16-44)?
What are the two black wires for (positive and negative)?  What are the 2 capacitors for? 
Are there written instructions for these motors? 

My 4-8-4 Northern came new with a fairly dim headlight and very bright rear light on the tender.  I have since added the Soundtraxx HEAVY STEAM decoder and am wondering how I can reverse the lighting....make the headlight brighter and the rear light same or at least not brighter.  Do I have to take apart the engine to get to the headlight?  It's about 8 years old. I don't know if the existing lights are LED's or incandescent bulbs.  Any suggestions are welcome.

JRP

Hi, I have an HO 4 bay grain hopper and want to remove the main "body" in order to add weight inside (it's 3 ounces but should be 6.5 based on length and NMRA standards.  Any suggestions on how to remove this without breaking it?  I see tabs on the bottom, but am afraid I will ruin it.   
Thanks.

JRP

I have a new HO 4-8-4 Northern that came with DCC.  I have just installed a sound decoder to go along with it, but also want to get the "chuff" sound in sync with the cylinders.  I purchased a Sound Trax cam kit and it calls for the cam to be "slipped onto the axle with the insulated side of the cam facing the drive wheel".

My question is this:  Because all 8 large drive wheels on this loco each have a thin copper connector for power, how will this affect the cam that needs to be electronically connected to the axle?  Will the copper connector cause the cam to not operate?

Does my question make any sense? 

Thanks.  JRP  "Great Southwest and Pacific RR" 

I recently purchased the 4-8-4 Northern (HO) and am planning to install a 1 inch speaker and sound decoder in the tender.  The unit is already DCC equiped.  My question is how do I get the cover off the tender easily?

I went to unsrew the trucks, but found they are wired to the inside of the tender and did not think removing the wires from the trucks looked like a good idea.   

Any suggestions?   

JRP  "Great Southwest and Pacific RR"