This thread reminds me of what happened to my car. There's a local shop here that's been here for as long as I can remember. I took my car in to get my alarm installed, they told me I would need another key for the bypass module. I went and had a key made, $83. Left the car, went back to get it, found my extra key and the module I had given them in the box. They charged me $49 for a different module. So that's about $100 I wasted on the universal bypass module and the key I had made.
So I get home and decide to test it out. The ****ing thing doesn't work. You can open the door from the inside and it doesn't go off until you slam the door, hard. I open my hood and guess what, no hood pin either. Try to open the trunk, nothing. I took it back the next day to get the alarm part fixed, at least. They fixed it and I was just so glad it was fixed I didn't care about the hood pin or the trunk release.
A few weeks later I'm doing something to my car, I don't remember what. I looked under the steering wheel and there's wires everywhere. Not one wire-tie or anything. It looks like complete shit.
Now, half the time when you arm the "alarm" the doors don't lock. I have to move the wire that runs under my carpet to the dash to make it work and some times that doesn't even work. The install came with a lifetime warranty but I don't think I want them ****ing with my car again, so I'll just correct their mistake some other time I guess. What would happen if someone broke into my car because the doors weren't locked? Would the shop that did the install be responsible for it? It hasn't done it in a few days but that doesn't mean it won't start again. Needless to say I won't be going back to that shop ever again.