Relays & Fridge

All a relay does is switch power on and off remotely. You still need to run the power to the fridge.
So, your question is a bit cryptic??

Klaus

I also have a Waeco 80 in an 80 series L/C and a relay is not needed. The purpose of a relay is to allow a light duty switch to control a high amp load appliance. Just run the correct size cable from your battery to the fridge, with a fuse at the battery (on the + ). Dont use the car body as the - , use a twin cable. I have no problem with this setup. The instructions with the fridge give you cable size to use but I did go a bit bigger just to be sure. Hope that helps keep the beer cold.

Hi Derek

Best to keep the wire 'Clean' and 'Heavy'

Run a 6mm2 or 8mm2 wire from the battery to the rear. No relays or switches. They cause resistance and lower the run time on 1 full charge.

Regards Derek.

Hi JD - With Spotlights, normally the Battery is up the front, and the Spotlights are up the front. Rather than run heavy cable from the battery, back inside the cabin to the switch, then up to the spotlights, a relay is used.
Heavy wire is run from the battery to the relay, then to the spotlights.
A thin wire (to trigger or switch the relay) is run from the relay into the cabin to the switch on the dash, then to a power source (accessories fuse etc).
For high power devices (Spot Lights/fridge etc) they need heavy cable, and the shorter the cable the less the voltage loss.
A relay helps keep the thick cable as short as possible.
A relay also lets you run thin wire to the switch, which often have small terminals.

So - if you want a switch mounted on your dash, so you can turn on/off the fridge in the back, then a relay would certanly do the trick. Mount the relay close to the battery.
Naturally you still need the full length of heavy cable to supply the power from the battery to the relay, and down to the fridge.
regards..........