Just got back from the test drive. It works!!!!

(Think Doc Brown in '55 when the DeLorean travels through time)
Unfortunately, couldnt get the box out, so I pried the board out of the box. I
PAINSTAKINGLY soldered each freaking joint and had to ducttape it back in. After I vowed that I would never use that stuff on my MB... But, it works. And no one but a mechanic who goes underneath there will ever know that it is ducttaped.
But this reinforced just how much I hate messing with interior work. And my back is FREAKING KILLING ME from that damned position I was laying in. Door sill right in my lumbar...