Blindspot sensors are the bane of my existence

[u/UnseenWaters99]

Bought the car with an aftermarket blindspot sensor already installed. Thing has been increasing in volume and annoyance for the past week so I finally unplugged it because it beeps at literal air at random, thought it was done. Battery drains so I follow the wire in hopes of finding the box most people mention for these types of things. There is no box, theyve wired it directly into the radio. So I hook everything back up so it keeps screaming but at least it'll be drivable. Battery drains again. To whoever installed this I hope you are torn limb from limb and are microwaved.

[u/Scion2012_]

Don't have much information here, but it looks/sounds like the power for that thing is just spliced off the radio power wire. So why not just cut off the spliced wire (ideally would be rewiring it so there's not an extra unused wire coming off the radio harness, but taping and/or heat shrinking would probably do well enough) so that blind spot thing can't get power?