Going through different social medias I found a very useful document that explain the connection for an upfitted pursuit Dodge Charger : Upfitter Guide
Found some interesting info like this:
Connect 12V to pin 1 & 2 to C2 and the front and rear light with flash!! Well that I much have :-)
On the pursuit there are 3 aux buttons on the steering wheel. I dedicated Aux3 for wig wag.
To avoid accidentally turn on the wig wag I decided to only enable wigwag when car is in park using the park signal as a gate.
The diagram is simple but the wiring is a a lot of work.