[911Obbie]

Thanks Bob.
Will keep working my way up the signal chain.
Do you know if this left front sensor feeds the entire signal path - ABS, frequency counter, speedo, tip ECU and spoiler? and, does the FCU have a code if in fact it's the culprit?
What's odd when I had it out was the Tip worked for 2 minutes then stopped. Speedo did not, spoiler did not and ABS remained lit the whole time. 120 second each on/off . ??