DIY Whelen 9″ X 7″ LED

I am converting an old ambulance to a RV / Tech van for fun and they wanted almost $400 each to convert the 50w halogen scene lights to the led versions so I took apart the lamp and designed my own panel that offers more light and 2 USA legal colors at 13.8v-15v 6500k White at 6,700lm and Yellow (588nm) at 250lm