lionel 334 not working

Have you tried jumping the two wires together at the #90 switch and see what happens. Basically you bypass the switch for a few seconds to see what happens. If it works fine with switch bypassed then your switch is bad, otherwise your dispatching station needs repair or you may have a bad wire somewhere not making a complete circuit.

Lee Fritz

Yes, I put the two wires together and nothing happens.   I noticed that the entire metal frame is hot in the sense that when I put a test light from ground and touch the base the test light lights up.  This would indicate that the metal base is positive    Is that correct?

Sounds like you lost(have a broken) a rubber bushing or an insulated washer piece that goes around a screw to keep it from going to the frame, so check all the screw mountings and power terminal hook-ups. Only one wire terminal should go to the base, the other to the motor or accessory device.

I had a flood light tower that lost it's insulator and would short out.

Lee Fritz

Problem solved.   I couldn't understand why the frame would have power.   After taking the cover off I noticed that terminal 3 was NOT the ground post.  Terminal 1 is.   If you look at page 430 of the Greenberg repair manual it indicates that terminal 3 is the ground.   Once I switched them the accessory work fine.   Thanks for the help 

Glad you got your problem solved!

Any way I am not that found of Greenberg's price guides and have never used Greenberg's repair or wiring guides. Greenberg's price guide doesn't list a couple of pre war tenders with certain engines and I have emailed them about this. Example is the 249E with a 2225T tender, according to Greenberg it never had that tender. This engine and tender are part of my dad's pre war train set so I know they are original.

Lee Fritz