Hi Ford Owners Club I've recently upgraded my sound system in my 2005 Ford Fiesta Zetec S 1.6 CDTI. After replacing the triple stack with an after market head unit, I've connected an old sub I had. All went is sweet & works well. Now here is the problem... When I accelerate or drive the sub seem's to cut out. The only thing I can think of that maybe effecting it, was the automatic volume control? I was wondering if there was a way to maybe cut/disconnect a wire feeding into the Head Unit that would stop this? Or if anyone else has experienced this, how did you solve it? I'm really scratching my head on this one. Thanks Crew!!