Stop in for a cup of coffee

Good grief, is the professor involved in the horns on new cars these days ?

Bill

processor, sorry.
Assuming you meant processor... absolutely. Every switch on a new car is just an input.
I don't think anything is controlled directly.
Output of the processor controls the relay. Which in this case is soldered on a board. Along with relays for wipers, locks, fuel pump... This is on an 09 Dodge Journey.