Yep.... One side of the switch goes to ground. No solenoid or relay.
The time delay relay is probably going to be one of the "every sprinter is unique" relays on the bars under the seat.
Those momentary switches connect to a control module (basically a specialized computer) that sees those signals, applies some logic, and then sends out a signal on a different wire to actually accomplish the desired task.Maybe I found a better way to ask this question. The switches in the center console IE "door lock" and the "ASR" switch are the same momentary switches. Press and release and the doors lock, do it again and they unlock. Looking at the switches they all have 5 connections so are the switches also a relay? I am just trying to understand how a momentary switch can act like a toggle switch.