This is a Williams, Crown Edition Line, brass Southern Pacific 4-8-4 GS-4 Daylight NO.5600 "O" Gauge Locomotive and Tender.

Thanks for the advice. I wish I had a wiring diagram. I have a 4 pin connector between the locomotive and the tender. I have checked wires for continuity. Seem good. I do have a wire that is not connected at all coming off the wire harness from the chassis to the shell. There is an open spot on the smoke switch. I tried connecting that wire but made no difference. There does not seem to be a wire carrying power to that switch. Again a wiring diagram would be nice.

Joe,
Thanks for responding to my call for help. It has been about 35 years since I have done any trouble shooting or anything else with my model trains. They have been in boxes that long and my wife suggested that I get them out clean them up,  get them running and decide whether or not to sell them or keep them . Once I started that project I became hooked again!
Yes, I have a volt/ohm meter
Yes, the pickup springs are in good shape and the rollers roll freely..
Yes, there is a cable and connector between the locomotive and the tender.
I am at work so I am not sure of the # of pins in the connector (3 or 4) but I will let you know when I get home.
No, I do not have a spare #53 bulb but will pick one up on the way home this evening.

I have a used 1989 era Williams locomotive which seems to be receiving no power. The locomotive has not been run for years. It has been lubricated and the motor is turning freely as are the drive wheels. I don't even get a light to flicker when I power up my refurbished Lionel postwar ZW 275 watt transformer. I have run my seven other locomotives with no issues. All other locomotives are Lionel but I am sure that this is not the problem. I would appreciate any ideas on troubleshooting this problem. Also, is there anywhere on line that I can download an operating manual and /or schematics of the Williams locomotive. I have just recently gotten our my trains from storage and am finding that my train sources are dried up or retired. Thanks.