I have recently added 2 signals to my layout using LED's. The signals are wired to operate from a PECO switch under the switch machine, so when the turnout is thrown against oncoming traffic, the signal turns red. The first one worked fine, but when I added the second one I found a problem. The green signal would dim when only one turnout was thrown, so one signal would display red and the other green.

Since so many are going DCC, does anyone have a CAMA transistor throttle they would like to sell reasonable?  N gage please.  Building layout, too many good DC engines to change, many can not go DCC, so I am stuck for help.

Hello,

Can I tie the grounds of switching power supplies together without causing problems?  I'm sure the loads (positive side) on each supply are not particularly well balanced at the moment.

I'm at the point of segregating LED lighting strips into areas.  I have three and may expand to four 12 volt 33 amp switching power supplies.  Wiring the control panel would become a lot easier if I could tie all the 12 volt grounds together.  I put a VOM between the grounds of two and got 40 volts and decided to ask questions.

I have seen in videos on MR Video plus as well as on TrainmasterTV  and on the internet the use of flux for electronic soldering. Once at a Narrow Gauge Convention I saw a dealer selling Carr's Orange (I believe) flux which will make solder work better without corroding electronic circuits. I have looked online and not been successful. Where can one purchase flux made for electronic projects like Carr's Orange or similar?  Any other suggestion out there?