ok guys i recently just traded my winter beater 89' Isuzu Trooper for a 94' celica. i took my almost new headunit and system out of the trooper and wired it all up in the celica. its a pretty much brand new jvc headunit and my system is a 12" kicker comp with a 1200 watt amp that kinda sucks but it still sounds great haha. everything worked great in the trooper and works great in the celica. im using all the same wiring etc. but im having kinda a weird problem. one day whil driving the sub cut out. so i opened the hatch to check out the amp... the amp was on. hmmmm checked all wires and everything was good. decided to pull the headunit out to check the wires in back of it and the rca cables. they were all fine. i put everything back together and it works! eventho i didnt do anything to it. a few days go by and it happens again. amp is on but sub isnt hitting again. pull the headunit again, fiddle with it and put it back together and it works again! WTF! so today im driving and it cuts out again. i discovered this time that if i push the dash trim like right next to the headunit then the sub will come back on. i just pulled the headunit again and made sure the ground was ok and everything looks ok.... what could be the problem? idk y if i fiddle with the headunit it will come back on... any ideas?

faulty rca cables, switch the set or the internal rca contacts on your headunit are damaged .

k ill try switching them out

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^ My first thoughts.

although i isn't a bad idea to doubble check ur amp isn't going into protect mode and the ground is good. Some headunits will cut RCA power to prevent damage if the signal out grounds out.