[HELP] Wig-Wag pattern with carcols

I’m trying to create a wigwag pattern on this charger’s lights. Looking at carcols.meta it only has options for the right and left taillight which doesn’t flash the actual orange portion(the part that stretches across the trunk and wraps around the tail lights). How can I implement the flashing pattern for these lights?

Furthermore, If I wanted to use brakelights instead of tail lights would that be possible? When I use a flash pattern on the tail lights for a crown vic, the brake lights always stay on while the tail lights are flashing so it doesn't look like a real wig wag. If anyone could tell me how to better implement this that would be great.