[silversurfer]

I'm trying to install the hardwire following the DIY guide set forth by everyone here without any luck. I'm hoping one of you guys would be kind enough to offer some suggestions.

Info:
2008 E90 335i sedan
radar detector: V1 with hardwire kit

What I've done so far:
1. Went to Kragens and bought Add-A-Circuit
2. Inserted 5amp fuse into slot B of Add-A-Circuit
3. Crimped the V1 hardwire cable (using the blue slicer that comes with the hardwire kit) to the Add-A-Circuit red wire
4. Inserted Add-A-Circuit to slot 7 per diagram, no power to V1
5. Turned Add-A-Circuit 180 degrees and reinserted, no power to V1

Things I didn't do: disconnect car battery. connect groundwire from hardwire cable to car. Should this matter?

I'm at a loss at this point. Help!!

Thanks in advance.