Thanks to the posts on here I was able to isolate the problem with my 95 Skorpion.
Symptom:
Starter motor not turning but relay clicks
Testing:
Battery OK( Make Sure!)
Short Circuit large terminals on Starter Relay = Starter motor turns over = Starter motor OK
Disconnect junction block to relay.Connect a wire from battery negative to red and white relay terminal, connect a wire to the blue and white terminal then touch this to the battery
positive. If the starter turns the relay is ok but the starter switch or wiring to it faulty. If the starter doesnt turn the fault lies with the relay.
I found a replacement for £21 inc P&P here ( XTZ660 tenere 91-98) pretty much the same thing right down to the wire colors and connecter:
http://cgi.ebay.co.uk/New-Starter-Relay ... 2eae6d56ea
Delivered within 24hrs its on the bike and working fine
relay 19 relay 30 search words added by mod so people find this easy
!