i installed my subs in my 01 cl-s using a hi-low converter. it was working fine after we finished up connecting/taping all the speaker wires, the sub seemed to have lost signal. we could not figure out what the problem is. here's what we did for the installation: we connected the hi-low converter to both the rear speakers, then using rca cables connected the converter to the amp and the amp to the battery and for the power switch we just connected it to my rear light. we grounded the the amp and everything. it worked at first, but it isn't working anymore, i'm still getting power to the amp but the subs arent working.

any ideas? thanks.