Chosen Solution
27 inch 2011 iMac AR5BXB112 WIFI card While re-assembling the iMac after putting in a new GPU, the wires to the AR5BXB112 WIFI card got disconnected. They are three black wires. The only identification seems to be white bands on the black wires. One wire has no white bands, one has one band and one has two bands. It seems reasonable that the bands on the wires would correspond to CHO, CH1 and CH2 markings on the WIFI card. I just want to be sure before I turn the iMac back on.
Here’s the replacement guides: iMac Intel 27" EMC 2429 AirPort Card Replacement
