Need help from anyone who knows the lift gate

[pdxrealtor]

Hate to start another thread, but there I need a quick answer.

I have ordered the rear license plate pocket that has the light in it, to replace my pocket that does not have the light.

Another forum member did this swap and said he needed a harness from GM. I ordered both from GM Direct.com, but the damn harness is back ordered nationally.

I even called a few Hummer dealers in the USA and they said not one dealer in the country has one.

The question is... do really have to have this harness?? I don't have the new pocket to see it, but I am thinking this harness is needed due to the plugs on the lights on the pocket???

Is there any way to just tap into the rear roof lights and power the license plate lights??