Update............
Still no joy
I have Battery voltage at fuse holder 72 in trunk
WHAT IS THIS CONNECTED TO SPECIFICALLY?
I have removed my Car audio gear.
Disconnected battery of 1hr.
Replaced all fuses w/ proper amperage
Reconnect battery
SNAP.....30A Fuse in holder 72 snaps.
I hear my changer cycle/Nav drive read/widescreen illuminates
I pulled the wiring at the changer and inspected it well. I get voltage at the fuse holder with or without the changer plugged in so I know the short is not internal to the changer.
I checked the Molex plug I added to the 3 pin changer power harness... No short, it OHMS out fine. I have voltage at the Ibus wire, Neither Ibus or 12V+ are shorted. I also tested at the pins on the 3 pin cd power harness same thing. (I also inspected the 4 pin connection into the changer looks fine no breaks...Not sure what this connector contains)
* I connected my remote 12V+ feed for my aftermarket amp to the Purple/White Stripe in the harness to the radio module. So I removed the plastic cover by the battery and inspected this as well. Looks clean soldered and shrink wrapped just like I left it. I also removed the harness for the radio module to make sure I didn't have an internal short in the module itself. Same condition 12.8V at the # 72 fuse holder with or without it plugged in.
What am I missing? The radio designation in the trunk holder encompasses several fuse holders. But 72 is always my prob.
I have tested and inspected the cd changer wiring.
(What I was messing with before it stopped working)
I checked the wiring into the radio module where I tapped into for my remote amp turn on lead.
The only other mod into stock wiring was tapping into the stock amps subwoofer output wiring over on the right side of the trunk to input a signal into my line output converter. I have checked this as well and disconnect my Audio Control LC2i. All wires are clean soldered and shrunk wrapped.
I've tried to outline as much ad possible here guys If you have any recommendations it would be much appreciated. I don't know if I could bring myself to take her in for something silly like this I caused.
***On a positive note I had battery voltage at the 5A Fuse fuse holder for the CD changer previously but after disconnecting the battery and replacing the fuse that seems to have rectified that issue. It didn't blow again like the the 30A and I cant get 12V off the legs any more.
I love BMW's, 12v and car audio and it's really frustrating me I can't get this back in order.