No marker interrupt switch 99 Pete 379

Hey guys, got a '99 Pete 379 that doesn't have a marker interrupt switch on the dash. All it has is the headlight switch on the center panel and a clips switch to the right of it.

Anybody know how to wire one in or even just modify either or both of the switch's wiring so that the clips switch interrupts all the marker lights instead of just the top clearance lights? Thanks for any and all help.

 

What do you mean by getting two switches?

 

I guess I'm still confused on what needs to be done to add in a marker interrupt switch that would turn off everything except the headlights with the push of a momentary push-button switch, I just don't know how to wire it.

As it is right now, the headlight switch works all the marker/tail lights and the "clips" switch only controls just the cab lights, nothing else, except on an older bellydump that I sometimes pull. On my 2 year old end dump, the clip switch does nothing to the lights. On the much older bellydump, the clips switch actually interrupts everything except the center tail lights.