battery died could it be how i wired?

I just put a Pioneer DEH-P590iB in a 91 bmw 850i I have attached pictures from the manual as well as a picture of the wiring harness. My battery died and i'm worried its because I wired the harness wrong. The car has a factory amp and originally when I wired the harness I did not connect the blue/white wire from the Pioneer harness to the BMW harness because there was only a solid blue wire left after I connected the rest of them. I was getting the radio to power up but no sound. So I then connected the blue wire that says Power amp + to the blue/white which is the connect to system control terminal of the power amp wire on the pioneer. Could this be causing the batter to drain because I read this in the manual. This is what I found for the wiring on the 850 The following numbers correspond to the harness that plugs into the BMW radio. Each wire has a number that routes to a certain location. Documentation came from a 1994 manual pertaining to a BMW 8 HiFi 10 speaker system. I would double check wiring by using a light tester. Radio Pin# 1 = Speaker LF+ 2 = RF+ 3 = LR+ 4 = Telephone Transceiver 5 = Accessory Power 6 = RR+ 7 = 8 = LF- 9 = Battery 10= Body Electronics Module 11= RF- 12= LR- 13= Light Switch 14= RR- 15= Ground 16= Antenna Amplifier 17= 18= 19=

well that didnt help anyone else a guru? lol

What color wire is pin 16?

blue withut the line

Yeah...it sounds like something is staying on ...or the Head Unit is never turning off the Amp (Check the remote wire to the amp?). Also make sure you have the 12v wires wired correctly...the yellow wire is usually your constant on (For the Head unit memory) and there will be another 12v wire for power when the ignition is turned, ACC feed (ie +12V when key is turned to ACC) Make sure tehy're not swapped or spliced into the same feed. Make sure the ground is good (clean ground on bare metal)

nothing wrong with battery. Turned out that there is a switch in the trunk that turns off the power to the car meant for long vacations to save battery. My trip to costco and a full trunk tripped the switch which I knew nothing about. LOL