speaker dont work??

1.yesterday i noticed my driver side door speaker dont work and i havent had time to look i was wondering if anyone would know why


2. and another thing, i was installing a pioneer deck into my gf's 99' s-10 and when i got it all wired up i turned it on but it wouldnt even turn on no power at all. i checked all the fuses there good, but i couldnt find the power wire cuz a couple of her moms previous boyfriends tried to install decks but there morons and messed something up. cuz when they got done the dash board lights didnt work anymore.

be sure to check grounds also. i know that happened to my friend all because he had a bad ground. and if that DOESNT work, not dont, if it doesnt work then all i can say is trace the power wire all the way back.

1.Might have to take the door panel off and see if any of the wires have come undone.

2.Ask the guys in the S-10 section about that considering its for an S-10 and not a cavy http://www.automotiveforums.com/vbulletin/forumdisplay.php?f=121