How To Do Wiring For Home Theater Below is a handy guide on wiring up the most common devices, but I also discuss the right gauge wiring to use, and the easiest way to hide the wires in your home theater. As an affiliate, I may collect a share of sales or other compensation from the links on this page. 6 Must-See Tips to Manage Wiring for Your Home Theater Setup Usually, using a 16-gauge wire is recommended for most home theater applications. However, if the wiring network for your home theater requires more than 50 feet of wire or if you want to set up in-wall or ceiling speakers, you may need to use a thicker wire (preferably 14 or 12-gauge) because long cable runs can cause considerable power losses.