Cooling fan, Cooling fan quit Options

[Bigblock]

After doing fender & bumper cover replacement, the right fender bulb went out. No biggie--got new 194 bulbs & replaced both.
On the way home from work, I noticed the temp got higher than it normally gets.
Here's the deal--
Only have 1 fan that a PO had wired to the ignition, so it always come on when I start the Celica.
Get home from& checked the fan-- nope, not running!
Here is my Q--
I don't have access to a millimeter, I do have the thing that lights up when it gets power.
What wire(s) should I test?

Did NOT get over heated.
Checking fuses when I get home tomorrow night.

Tips & advice Greatly Appreciated!!!
Thanks

[Bigblock]

How the heck do I unplug the connector that's on the shrowd?? I can't get the 2 tiny things to release, the big 1 is no problem.
If I can get the blasted things to release I could run the wires to test the fan!!
Also checked the fuses-- the regular 1s are good, the big square things look coroded.
The square things are--
30amp. 30amp. 30amp. 40amp. { these are inside the car, driver side in the fuse box }