ok i have an old kenwood kac-923 amp, running a sub

what happens is that it takes a 30A fuse, so i hooked everything up, and i turn everything on, and it works for like couple of mins (maybe like 2 mins) then the fuse blows.....

what could be causing this????

could it be a bad ground???? I have ground hooked up to the screw in the back for the drivers side rear light, pictures below....could it be that the spot i have for ground is bad...if so where do you guys say i ground it at??? (well i'll get the pics up later they are on my phone, and my phone is acting up, so when it works i'll put pics up)

the sub is rated for 200watt max.... could it be something with that????

 

Grounded to a seat balt<floor>!!!!!!!!

 

Or - the old kac 923s (AFAIK) are not stable into one ohm - what is your sub set-up if more than one driven off this amp... (i smoke-checked once. I know.)