Stereo doesnt work when headlights turn on

[SIZE=12pt]So i just got a new car (2005 mazda 3) , and I installed the radio myself and worked perfectly the first couple days. Then just today i turned my car on with lights and the radio said there was no signal, as in it was on, but “no signal...” would just show up on screen. Then when i turned off the car headlights the radio turned on and worked perfectly. So now when im driving at night i have no music.[/SIZE]

[SIZE=12pt]My radio can be found here: https://www.amazon.com/gp/aw/d/B07J6F58H2?psc=1&ref=ppx_pop_mob_b_asin_title[/SIZE]

[SIZE=12pt]My harness adapter can be found here: https://www.amazon.com/gp/aw/d/B0007KPRWO?psc=1&ref=ppx_pop_mob_b_asin_title[/SIZE]

P.S.

I apologize for breaking any forum rules I’m new to the site.