I'm pretty sure the bulbs are replaceable, but I can't say for 100% certainty, I've never had to replace mine. They are in my Jeep, I've already put the same bulb that the high beams are in those.

BTW, good luck with the remote starter, I haven't seen anybody have anything but problems with them - and that includes the Mopar one unless it came factory installed. If it ends up working out for you over time, you may want to repost what brand/model it is cause I know a few guys who are looking after having issues with theirs right down to having the vehicles security system basically disabling the key and having to be towed to the dealership...

 

It was installed because the Fiancee' doesn't want to have to get into a cold vehicle. It was -11 below yesterday and her work installs them so i got a good price.
I got an Astro start as I have heard alot of good and read alot of good and they come highly recommened from a mechanic freind about the construction of the Astro start as long as it is installed correctly....