How can I start my 2002 jaguar xtype?

When you say it won't turn over - do you mean you can hear it trying to turn but there isn't enough power in the battery or is there absolutely nothing at all happening? If you're not sure, put the headlights on and then try starting, if when you turn the ignition key the headlamps dim a lot then your battery hasn't enough power in it -probably because of what you've been doing with the speakers. (you haven't left a courtesy light on for a long time have you?) If the headlights don't dim then the battery's probably OK but you may have a problem with the starter system. Hope that moves you on a little!

Richard
December 2008

sounds as if you have shorted the battery, disconnect the speakers before the car goes up in flames. Then after recharging your battery, reinstall the speakers, BUT be very careful about polarity

Sheepdog
December 2008