Welcome to the Forum Kevin!
Do you have a model number on the underside of you loco?
Perhaps also a gold sticker with a 6-digit number?
Those details will help us identify the age of your model, and the type/rating of the lights.
Is it a digital (DCC) set?
Have you tried different positions of the switch in the cab?
PhilP.
Hi PhilP,
White stamped number is 20211. Gold sticker is 901028. I do not think it is digital. I only use the original power converter with an analog dial.

The bulbs I am using are 5 volt plug in. I've been told this model does not have the 3 way control switch under the boiler door in the cab, although there is a cutout for it. Wheels are metal. Rails connecting the wheels are plastic. Number 3 on side of cab.
From another forum,
www.mylargescale.com, user Piercedandan gave me this information after I incorrectly reported 001028 off the gold sticker. The year 1998 does coincide with when I received the trainset from my father as a gift in 1998 or 1999:
"The 001028 is a date code in the format of YDDMMY. Day is always 01, so this represents 2008 February.
20211 is the LGB part number and was manufactured after lgb went into 'receivership'.
Possibly the leading 0 is wrong and this is really 1998 which makes more sense as the 30th anniversary set was made 1996 to 1998.
Originally sold in the 30th anniversary set (73968) with the cars carrying 6 pieces of track.
This engine did not have the 3 way switch and the rear power plug was a dummy and the cab number was 3."
My goal is to get lights working and learn if and how I can get smoke and sound on this unit.
Thanks,
Kevin