Thanks dojj, I have a loom sorted to run the pump with low fluid warning and correct pressure cut out etc. What's puzzling me is the the master cylinder had the bung missing but I had a bung from somewhere??? I cannot get the bung back in with the funny shaped bit of metal in the way. I may have to bench test it all with some old calipers...that or buy anothe master and see what is what. My pressure pump will sit in the inner wing, away from the master cylinder.