This is my first attempt at setting up a car-audio system and as with every thing that i do for the first time, im having trouble. I have some crappy Pyramid Gold blue series amp which I've been trying to google forever but i cant seem to find it. It's definitely old because i got it off a friend who used it ages ago. I'll get the model # for u guys later if u might recognize it. Ok so i wire the power to it, i wire the REM cable from my deck to it, i ground it to a bolt (and the area around the bolt which i sanded) and i connect the positive and negative speaker wires from my left rear speaker. Success, i get sound, and it sounds great. I get excited, and naturally install the right speaker, however no sound in it (only the left speaker works). Puzzled, i push the button that says "bridged" or "normal" on it. suddenly the right speaker works, but no longer the left

. After turning off the system I pull out the two fuses on my amp and push em back in (both got the # 15 on them). I disconnect both speakers and try the left speaker again. wouldnt you know it doesnt work at all now. My fuse at the car battery is fine.
What on earth is going on?????? Anyone had this problem before that can help? I also noticed that on this amp, there are 2 12v+ screws, 2 grnd screws, and one REM screw. I only have one 12v wire and one grnd running (and one REM ofcourse). (Oh i almost forgot, i have my RCA cable running from my deck to the amp too, thats not the problem lol).