Has to be my Sykes Pickavant Relay tester

Handy bit of kit - and has saved me loads of time on weird 'non-start' problems mostly with MY2000>onwards Transits

And FoCom diagnostic software Does 99% what Ford IDS does... Diagnostic testing, detailed fault codes. Codes keys, pumps, TDCi injectors... Use it nearly every day. £250 well spent! And because it's genuine and not chinese, it gets frequent updates.