Dodge/Ram upfitter switches

[kitn1mcc]

One of my customers just picked up a 5500 masons dump.

I found some info on line how they do the up fitter swiches

Any pointers info. also what is the pass thru wire to the rear

 

[JLW82]

Did you ever figure this out? I'm trying to wire 2 Whelen dominator4's at the rear of a '17 5500.

 

[kitn1mcc]

all on line

 

[JLW82]

all on line

Yeah I found that also. But basically it just seems to involve:
Positive cable to positive terminal and aux switch input
Negative cable to negative terminal

Correct?

 

[kitn1mcc]

yeah thats it