I finally got around to replacing the light in my lighted grab bar handle. If anyone else has this issue, here is some information.
The LED light fits in the top of the handle and shines down through the tubes in the plastic handle. The handles are manufactured by ITC Corporation and the replacement LED is an assembly with the bulb, light frame, and wiring as one unit. Just remove the grab bar assembly, unplug the old light assembly and plug in the new one. From what I can find out, they manufacture most of the lighted grab bars for RV's and boats. Below is their web site.
http://www.itc-marine.com/product/led-r ... ip-handles
I called their Indiana division and the lady cheerfully sold me the replacement without going through a dealer. It was $10 plus shipping so I order two so that I would have a replacement. Someone else said that their first replacement didn't last very long. I watched another person in FL last winter attempt to rig a replacement using a regular DC bulb assembly. In such a small unvented enclosure, I didn't think that was a very good idea due to excess heat!