Thread: What does this do??

Does anyone know what this little box for?

It's a 1994 Def 110 (300 Tdi)



Thanks in advance!

Originally Posted by landiematt

Air con thermostat control

A/C Thermostat Control, no longer available, only on Australian Defenders.

A simpler aftermarket control unit can be sourced for around $50 if yours is defunct. Try a good A/C auto-elec.

Mine had a dry solder joint on the circuit board that caused poor contact and arcing on the power supply pin, which in turn damaged the plug. I was driving through the Kimberley at the time and had to solder wires with bullet plugs on the pins on the controller and then cut the plug and solder on corresponding bullet connectors. I was going to replace it, but nearly 2 years later and it's still working fine.