Just in case anyone else is trying to do the same, I’ll post my findings here.
I attached the laser to the FAN0 terminals after verifying with a meter that they work in conjunction with the laser screen on the BTT TFT35 E3 V3 found in the V1 shop with the SKR PRO V1.2 here from 0-12vdc.
I did have to install a 2.2k ohm resistor between the terminals on FAN0 + & - to get it turn down low enough at 1% to not burn anything. Without it, the laser is full power no matter what you have the laser percentage set to. @Tuco mentions that here (thank you).
Now, I wait for my mount to finish printing and get everything mounted. Then I’ll try to play around with the laser functions in Estlcam and see if the laser responds to the gcode generated.
If anyone has any advice, I’m all ears.
Also, I did purchase these glasses and they do a great job (IMO) of blocking out the laser. Stupidly I connected power to the laser when I first purchased it and just the brightness gave me an immediate headache. These lasers are NO joke.