MX4660 with UC100 and UCCNC. Need help with output 1

Hello Everyone.

I am building my first CNC Plasma table. I am using MX4660 with UC100 and UCCNC software.

I am currently trying to wire in a 12v relay, I have it wired as follows.

power supply 12V + to Relay coil +
Relay coil - to MX4660 Output 1 +
MX4660 Output 1 - to power supply 12V -

(I have also tried wiring backwards.)

In UCCNC I have configured spindle M3 Relay to PIN 17 PORT 1.

According to everything I read when I press the torch "ON" button in UCCNC the 12v relay should trigger and close the loop between Pin 3 & 4 on the plasma cutter triggering the torch.

However the 12V relay is not closing.

What could I be doing wrong here?

Am I missing anything?

Thank you all in advance.