Will Vega run crossfire ??

Question 1

Just got my 2nd Vega cards and am having trouble getting them to crossfire. The first was fine . They show up in device manager. I have run "many" CF setups and used all the usual tricks - clean install etc

I have noticed that the 5 or 6 led Lights by the power plug only show one led on each when I have 2 cards installed. 1600 watt power supply.

 

Question 2

On those power plug led lights why on one card are they red the other blue ?

Both cards run fine solo it seems

 

1600 watt power supply.

Ryzen 1800

Asrock  370