I take it you ran a wire with an inline fuze directly from the battery, through the dash somewhere and then under the carpet under the seat and up the back of the console?
On the Drivers side there is a gromet in the engine compartment which comes through by the In Car Fuse Box (Under the dash). then run round under the dash and into the centre console along the underside of the console to a socket.
Did you put an earth on to the power socket? - Ran the earth at the same time to a earth point next to the under engine fuse board a lot easier then messing around for a earth in the dash.