Shoot ok. I thought the voltage divider was a safe option.
So to clarify the procedure I should follow is
1. Flash to pin 42
2. Test for variable voltage ~5v at 100% fan at pin 42.
3. Connect 12v to driver (possibly where i made a mistake.. I connected ttl at the same time)
4. Turn on Current LED then adjust voltage to 5.5v turn off current led.
5. Attach load to laser + -, connect 12v and ttl.
6. adjust voltage to 1.7