I hate to post on topic after a thread has been hijacked but I found some things I found interesting anyway.
1) Leave a door open and the dome light comes on. Leave it open long enough and it goes out by itself, saving the battery.
2) Related to (1), try and find the pin switches which detect that a door is open!
3) Standing outside the truck I heard a fan type noise from the back of the cab. I had the fan running in the cab. Upon looking there appears to be two louvered exhaust ports on the back of the cab to exhaust cab air.
I've never noticed another vehicle with that.
That's all for now.

1) Leave a door open and the dome light comes on. Leave it open long enough and it goes out by itself, saving the battery.

2) Related to (1), try and find the pin switches which detect that a door is open!

3) Standing outside the truck I heard a fan type noise from the back of the cab. I had the fan running in the cab. Upon looking there appears to be two louvered exhaust ports on the back of the cab to exhaust cab air.

That's all for now.