Constant/Intermittent "No Signal" Reverse Camera Issue

ISSUE:

If you're getting a "No Signal" error message constantly/intermittently on your T-1817G-A13 head unit when going on reverse.

FIX:

Cut the red wire (ACC) from the decoder box and tap it to a yellow wire (B+). See picture below for reference:

Here are some pictures of T-1817G-A13 Wiring Diagram for your reference as well.