190e 2.3 8V Aux Fan Issue

[denaliano]

Having some high temp issues when AC is on, and noticed that the Aux fan isn't coming on when the AC is running. So I attempted to manually engage it.

When I short the aux fan/pressure switch on the condenser, I hear and feel the relay click inside the fuse box, but no fan.

So then I ran a heavy gauge wire from the battery to the Aux Fan Pre-Resistor and it kicks on LOW speed. Good, that's normal.

My question is, now why isn't it kicking on when I trip the switch and activate the relay?

When I short the High Temp sensor on the head, the fan kicks on, so the relay is working, correct? Attached wiring schematic.