HU turns off with headlights

Well my pioneer headunit turn off and on when i turn my headlights on or off and cuts out when i turn it up to 45.I was wondering what could be the prob.I have a 93 tbird.It was fine but when i went to put it back in to started to do this i hooked it up the same way and everything.

Scoot

OK well 9i checked the ground even redid the ground to the chass and still the same thing.Someone b4 me had the car and cut the harness.I found out tonight that the yellow wire with the black stripe does not have power at all.How do i fix this.

Scoot

OK well i got it to to work.But i have to hook it to the radio fuze and it works not more tunring off when lights come on.But can this hurt the car or the radio ass ir works all my dash lights and everything.or can i leave it like this.Plus the yellow wire that dont work is the 12volt wire and for some reason dont have power is this common or not.

Scoot

I was thinking the same but at the dash i have no other power to hook to.I have tried the antenna power wire and dont work.HAve tried a diff yellow power wire no go.So i just hooked to fuze can it hurt it at all.But the wire that is doing this is a ed wire with a black stripe soiam thinking it is a power wire.