Ebay for the lead, ross tech website for the latest version of software (lite version should be fine, the cheap leads should be fine for what you require). No idea on the glowplug though. I'd have a look on the software side first to see if the problem is the glow plug first if i were you. Think they normally either smoke excessively or log flame out errors with a duff plug, but there are other things that can cause them to lock out till cleared. So I got a lead, no faults found now after I cleared the ground one. Still getting smoke though.