Charging TOM TOM Navigator 3 GPS

Just purchased a new GPS bluetooth system. Fitted the PDA cradle into the car and plugged it in to the lighter socket. Left the GPS on the dashboard. All working fine and then I thought that the battery power in the GPS was running down and so I took the lighter socket lead from the cradle and plugged it into the GPS unit. Phut, smoke now not working. Is this my fault or a fault with the GPS ??

[Charlie]

Welcome to our forums.
I'm afraid it's your fault, you've just put 12v into a 5v device