Had an alarm fitted to a Reno 5 a few years ago, driving back from the shop, I got stuck in traffic and suddenly smoke is pouring out of the engine bay

Got out, luckily the fire put itself out

Turns out the loom burnt itself to a crisp, so, after a recovery job, I naturally call the shop and asked them what recourse I had, they were the last ones to dabble with the car's electrics after all...

They tell me that it shouldn't have anything to do with them

A short conversation with an auto electrician later, it turns out that he reckoned the radiator fan got stuck solid as it isn't fused as standard, being sat in traffic for a long time you can imagine what happened... A common problem with those cars apparently .

Nothing wrong with the alarm install then, but still sort of related

I have used the car stereo shop in question ever since and never had to question their workmanship or knowledge
Things aren't always what they seem at first glance.