altimababe

Recently, I have purchased 2 pairs of LED door handle light and make the bodyshop to mount it under my 05 altima door handle. It is absolutely awesome where they conneted the switch to the interior doom light. When you access the car, it shines beautifully.
However, recently there is a problem annoyed me much, which is my fuse that manages the doom light always blow. I dont know why its happened and I though that LED light only draws milliAMps so it could not be overloaded. I have that situation looked up by the bodyshop agian to see if there are somewhere shorted out and they told me there is no connection problem. They said it is somewhere unknown draws alot of current. I found that everytime I ignited the engine the fuse blows. Does anynody here familiar with the car circuit and might give me some advice concering about this? Thanks for ur help~~