I purchased some LED side emblems for my 2020 F450. Trying to find out how to wire them to come on with my other marker lights. The online instructions only explain how to run them from an upfitter switch but I want them to come on when I hit my key faub and when I turn my lights on. There is a control module that needs to be placed inside the cab. That module has a fairly short power wire so I need to get power from a lighting wire that’s inside the cab. Can anyone tell me where I can find wiring schematics or tell me how to trace down the right wire? Thx in advance for any feed back.

 

I'd tap into the front marker lamp wiring for that side

 

^ I'd do the same.