Civic EG

Hi Guys

I installed some 6x9's in the rear of my sedan but now the car wont start, no sound from the starter motor, with the ignition on the radio and wipers etc. work, pulled out the starter motor, got it checked out and it does work, but when I disconnect the 6x9's the car works just like it has before, starts instantly, So the 6x9's are doing something to the car, What do i need to do to get the car running with 6x9's?

Did you change the wiring in any other part of the car during the install?

Nope, just went and put bigger speakers in place of the standard ones

Think i found the problem to be the alternator