head unit question

i hav jus recently got a swap in my car which is a 93 civic hatch dx... and my head unit is a jvc kd-lx030 i tink thats what it is, its those chameleon headunits... but i jus recently broke my engine in... but somtimes when i shift the whole car jolts... but jus today my headunit wont even turn on... i had a problem like that a while ago when i jus got my swap in but a few seconds later it turned on... i dont know if wiring in my car go messed up i dont know if its my connections to the headunit any info would be greatly appreciated...

Umm...I'm thinking that if it turns off or on or off and on when the car jolts, you have a lose wire somewhere that is making contact and then not. If that's what's going on, then you should take the deck out and check all the wires and everything. If it's not that, I don't know what to tell ya. :)

thanks for the info i jus found out that i blew my fuse in my car for the radio n lighter thing... but ur help is greatlyy appreciate...