It would be helpful if you would post Brand/Model of fridge
It would be helpful if you gave a bit more info on WHICH RED wire
If fridge is an Absorption AC/LP fridge it needs 12VDC to function
That DC comes form a FUSED Source....DC Dist Panel with all the various fuses for the 'house'
Fridge should have a dedicated FUSED Source from that panel
Test Fuses......... unless it is obvious is has blown
Blown fuse means short in wires going to Fridge
*Fridge circuit board has it's own set of AC/DC Fuses
Is it time for YOUR Medication or Mine?
Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31