Does anyone have a wiring diagram that they used for a GL? I want to use a 5 pin rocker switch. 

Why a 5 pin?

The easiest way to do it is to run a dual wire from the temp switch at the radiator, have one wire go to the switch, the other wire from the wiring loom. 

On the other end of these two wires will be the three way switch. You wire the loom wire into the common/shared pin, the switch wire to one side of the three way switch. The other side of the switch is wired to earth. 

Back at the radiator end, you’ll need to put the other wire of the temp switch to earth. You may have to work out which wire is earth and which is the reference wire that goes to the relays. Or it may not matter since it’s just a switch. 

The MY is much easier to do since it’s only a one wire switch. 

Cheers 

Bennie