I put an led build in the dome light. It doesn't completely shut off. Glows. Anyway to fix this?

 

LEDs are extremely efficient and sometimes there is just enough current leakage within the lighting circuit to power an LED bulb just a little. You don't notice this with a regular bulb.

Anyway, it really is not a problem and not worth trying to fix. It will not hurt anything or kill your battery. Depending on the year of your truck, the LED will probably stop glowing after 15 minutes or so when your truck's system cuts all power as part of it's normal battery protection system.

I have converted all of my lights to LEDs inside and outside (except for the HID headlights) and I have had no issues.

--KLG--