Please note a few ECU looms around 1990 do not have the TTS connector, and use a white square 6 pin connector.(typically used on the factory MGBV8) so if you cant find the TTS connector, have a look for this square connector. It looks the same as the black connector used for the fault code reader, but is made from white plastic instead. If you need the MGB cable please contact me .
RoverGauge freeware download https://github.com/colinbourassa/rovergauge/releases
Note: Download and extract the files to one folder on your hard drive. RoverGauge.exe must be run from within the folder, it cant be run without the associated files. It will run without a cable if you want to see all its functions, but obviously wont connect to the ECU.
This cable is NOT compatible with the P38 series V8 Range Rover fitted with the GEM's engine management system.