Veracruz rear audio jack doesn't work

OK if its a face off, check the plug is clean on the face... if it doesnt thin the face is on, it wont switch on (many a problems wit that ;) )

next: loose wires? most cars have the standard wires, with an adapter to Kenny / Sony / ETC players... check yours is all in proper (normally people check the plug is in the CD player but forget about it only essentually being an extention ;) (like checking an extention is plugged in but not a lamp into the extention ETC ;) lol)

erm, Fuses... (sometimes they look ok, but change them... for 20p worth a shot.. plus who hasnt got spare fuses in their car?)

2 wires for possitive btw... a Yellow one is normally the pernament live.... a red one is normally the "remote / ignition" live... most CD players will NOT turn on without the ignition being switched on.