Hi Visionliner
You can definitely do this through the ezCAN. The lights will have a 12V wire for white and 12V wire for amber, along with a ground wire.
Considering that the white LEDs only need constant 12, you can set them up as an accessory, which will simply give constant 12V. The amber lights' wiring will need to be connected to separate channels and configured as turn signals left and right respectively.
I believe the lights should have an built in function to turn the white off once the amber is illuminated, but if not, you can setup the white lights' channel as an aux lights pair and disable all functions except "Off when turn signals are active", which will manually turn them off when you indicate.
Kind regards
Ruan