[idakiteman]

Adding a homelink console to my 2005 Sierra crew cab (without the sunroof), there's another lesson I learned. The lighting functions work differently depending on whether the console is map-lights-only or homelight console with map lights. With the map-lights-only console that was originally on my Sierra, the map lights come on when the door is opened. But with the homelink console, the map lights do not go on/off in response to door open & close. This seems by design. Looking at the two consoles you can see why this is the case. The map light buttons on the two are different. On the map-lights-only console, the light button switches have 3 wire connections whereas the homelink console light buttons have only 2 wires. For the lights-only console switches, the black wire is ground, orange is permanent 12v, and the cream colored wire must be power driven by the door switch, and switching only connects/disconnets the orange & black wires. The cream-to-black connection is unswitched and must be driven by the BCM sensing door open & close. For the homelink console, the 2 wires going to each switch button are permanent 12v power & ground. It lacks the third wire for door-activated lighting.

I verified this by examining my 2001 Suburban LT which has a stock homelink console. It's map lights don't come on upon door open...only by console switch activation. Also, it's map light button switches are the 2 wire type.

As has been mentioned, I suppose a person could make the homelink console lighting work like the lights-only console by moving the map light switches, wire harness w/ connector, & light eyes from the lights-only console over to the homelink console, and then splice into the lights-only harness to supply power/ground to the homelink controller.