99 grand marquis problems with battery draining when messing with my radio
I had just bought a jvc head unit
withat the adapters for my make
model and year car. My car had
ran perfectly and everything but
when I had taken my radio out my
horn, my interior lights, the remote
for the lock and unlock just stoped
working so the next day I jump
started the car and let it run for 10
min. And still no problems. Then
when I strated to plug in the new
radio it's like all my battery got
drained of all power and it's a new
battery. I got the correct adapters
and everything. Need help for
opinion on what's wrong with my
car