Help Me!

[xrsxj]

Ok, i recently bought a 1992 ES300, its in buetiful condition new paint leather is still great there was jsut one htign that was bugging me, the 6 disc cd changer in the trunk wouldn't work, the radio would work on all the stations but no cd's, and since i have to replace the antenna all the stations is more like 2 and they were staticy but i could deal. So one day me being as dumb as i am, i went back and pulled the cd changer apart to get the disk module out to see if it was just jammed in there. Upon reconnecting the cd changer i can't get anythign on the radio anymore, i checked every fuse i can find engine compartment and under the driver side dash panel all ok and there is 12 volts at the radio fuse at the dash. I checked the voltage at the head unit and its getting about 6 total from all the conenctions on one of the connectors on the back of it. I checked the voltage at the cd changer and it has a total f jsut under about 4 these are if you add all the leads together, changer wawss about .8 per lead and the head unit had 5 on one and about 9 on 2 others, the rest of them were dead. I can use the lexus phone and still hear it through the speakers so know i have no clue what to do however, i do know thata the lighter isn't working, not sure if it was before but i sure as hell know the radio was. ANY IDEAS OH MIGHTY CAR AUDIO GODS? I really need help on this one, thanks a milliona and one times in advance for anything.