after fitting new shuttle valve found that electric windows and indicators did not work. Was told that the fuse board under steering wheel has probably had it, so got a new one and fitted and now nothing works, can even get is started - anybody got any ideas??

Forum etiquette requires at you introduce yourself and your motor prior to any plea for help? Welcome anyway,:welcome: Sure there will be someone here to assist, but will need more details of your motor to suggest any likely solutions to your problem.