2001 Jeep Grand Cherokee - problems after alarm installation

01 jeep grand Cherokee Laredo, had keyless starter, alarm installed, rear wiper stopped, interior lights stopped, sometimes have to slap dash or shut door to get a/c to blow. Took to shop they took out whole alarm system and charged me too much, and everything stll same blow. Rear window handle blowing fuse.

I suspect that somewhere along the lines of the aftermarket alarm being installed/uninstalled (my guess would be during installation) they screwed up the wiring somewhere and that’s caused the cascade of failures you’re having now. At this point, I’d take it to a place that specializes in car electronic installation, tell them what happened and let them take a look at it

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