Hello,
The problem I have is regarding installing a MkIV Nav computer in a 2002 Range Rover..... I know, I know, please be kind!
I bought a MkIV from Ebay & swapped it with the existing Mk3 in the car. Now the computer screen remains blank (black) all the time. ie when I open the car door, put the key in the ignition to the R position or start the engine.
The MkIV unit does have the red power light on & it makes no difference whether I have the Nav disk in or not.
If I replace it with the Mk3 unit all works normally.
Is it ..... off... or


....

Any help / ideas gratefully received!

Thank you.

Riggers
Range Rover Vogue 2002