just wondering if anyone knows the function of the short connector(in front relay box) for non-bose fd stereo systems. my stereo continues to have very low volume output since i replaced my main 120A fuse and two interior 10A fuses after blowing them out(shorted battery during install)

the only issue i have been able to find is with the short connector, it does not have continuity between terminals A and E (refer to FSM JH1-29 and 30).

could a broken short connector be the cause of the low volume? or would a defect in this part have different symptoms?

i have a similar thread in the interior/audio section with the stereo wiring diagram if needed for reference hope someone has an idea what is going on..

 

btw, besides stereo having almost no volume.. stereo display doesn't light with headlights/parking lights, however the cd and tape audio are normal. help