Rich

Anything in particular that I should be looking out for that may cause a problem?

Hi  --D

Thanks for your advice. I attached them to a 9v power supply and that worked except the lights are not as bright.  Should I try a 12v or would that cause a problem.

Electrical novice here so please bear with me and use layman terms.  I bought 14 of these lights on ebay:
http://www.ebay.com/itm/151190332123?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I connected them to my accessory 16v ac connection on my Bachmann DC controller.  All the lights come on for about 7 seconds and then go off.  I then have to wait a few minutes before I can turn them back on for another 7 seconds.  It's like they are overheating or pulling to much power.  I really need help.

Thanks