[jimichrome]

Can any one tell me the purpose of what looks like a plunger & a toggle switch (seen in photo) at the end of dangling wires I see under the dash of our 2012 Volvo XC90. View in pic is at firewall near where the drivers foot rests. Thank you, Jim

 

[Omar Yongt]

Oh I could see that in my proton saga 2019 months ago. The firewall is a part of the automobile body and it separates the engine compartment between the driver and passengers.