Recently purchased a Whelen Liberty LFL Edge, Model SL8EAAAA. And I am just wondering what gauge wire is recommended on using for the power of the lightbar and the control wires.
What you have there is an Economy Liberty. I believe it should contain a 01-0269936-01 two-channel flasher. The closest manual I can find at the moment is for the Towman's Liberty, here: https://www.whelen.com/install/139/13990.pdf
The wire gauges are listed as a 3-conductor 14 AWG cable for the LEDs, a 3-conductor 22 AWG cable for the scan-lock patterns, a 6-conductor 16 AWG cable for the halogen options, and a 4-conductor 16 AWG cable for the brake/tail lights.