Using maps in Iceland is pure nonsense
Seems few visitors dare to rent a vehicle here in Iceland without forking out extra for a guiding system of some sort. That is pure nonsense.
The reason being that while the country itself is pretty big the population is very tiny. Therefore, the road system is not very large and certainly not complicated.
Team Total Iceland contends one cannot make a „wrong“ turn here in Iceland. Sure, you can make an incorrect turn in many places but roads being short no one will drive very far without realizing the mistake. Remember this is largely a wood less country and there is little to block your view in most directions anywhere. Also remember that most people only drive here in summertime and since darkness is largely absent this will not cause you problems.
On the contrary, a „wrong“ turn will often lead you to something very interesting. Often something foreign guidebooks will tell you nothing about. Anyway, why go exploring in Iceland only to blindly follow some computer system? Which is not called exploring.