Real story: when I lost a screw down the center under the steering wheel, I tried to get at it with some very strong magnets with no luck. A small magnet with a hole in the middle worked wonders on the end of the aluminum wire guide I supplied with the kits. This dry run on my car (which was already hooked up with the LED) was helpful to avoid to much scratching-of-head during the video on how to install the thing.
Later that week, I noticed my
windows wouldn't go down.
Fuse was good, everything looked fine. After being clueless long enough, I took it in to get looked at. A bit of head scratching from everyone involved until someone looked under the dash at the window control module. My super-strong magnets managed to roll up to and stick onto the module! They held the relay open.
So be careful you don't leave your glasses or wallet in the wrong place when you install that LED! It could cause problems down the road like for me and my magnets.