1996 Jeep Cherokee My sun roof turns my stereo on?

Electrical problem
1996 Jeep Cherokee 6 cyl All Wheel Drive Automatic

I recently installed an aftermarket stereo and after a week or so it quit working I checked all the connections and they were fine, one sunny day I opened the sun roof and wow my stereo came on now on a regular basis when I start my jeep the stereo doesn't come on I click the button for the sun roof and it comes back on or if the stereo is already on and I open the sun roof the stereo will shut off, some times my instrument panel will also flash that a tail light is out when there's not and also when I pushed the rear windshield wiper button the stereo also went off does anyone have any ideas on what the problem might be? I thank you all for your time and your help, Diana