I see Hummingbirds recommendation for wiring installation:
1-6 Feet 18 AWG 6-12 feet 14 AWG 12-24 feet 12 AWG
The power cable that comes with the unit has a 6 foot 18 AWG cable. Isn't the provided 18 AWG cable the weak link in the wiring if you add wiring that is thicker than 18 AWG? Is it really better to add 12 AWG for another 6 feet and tie into the 6 foot cable that Hummingbird provide that is 18 AWG? Or is it just as good to add 16 AWG or 18 AWG wiring from the battery to the power cable Hummingbird provided. This build is for a single unit in my smaller REZ boat. Previously I was running a 12" Carbon HDS in this boat that had 16 AWG wiring run to about 16 feet and I had no issues.