PROBLEMS

"think my after market cd player is making dials not work what could in be "

I'd guess at a dodgy earth point not sure though

What make is it? El-cheapo? Need a bit more info.

"have you tried with the stock headunit back in to see if dials work again?? i would say first route is always check all fuses in car and under bonnet... if all look ok then check any earthing points. seems doubtfull for any aftermarket headunit to cause dials to stop working what car is it?? if its the punto in the picture then good luck fiats are known for electrical faults. hope its just something easy though "