I am a novice at Gscale.
I have a Jackson Sharp Observation Car Bachmann # 89394.
My question is ..how do I relace the light bulb thats on the rear railing (the round sign).When taking  the sign off the rail broke the bulb and broke the wire connection to the bulb housing. I tried to solder the wires back to the housing but with the bad eyes and probably wrong soldering iron its not working.
Can anyone help?
Thanks
Bob