All the sensors were ticking, but T4 (Testbook version 4.Computer Diagnostic System) said one of the sensors was faulty.That sensor was also giving odd distance results. It may be the box, or may be the sensor, but as David suggests, the sensor is the first thing to try.
Hi, if it does turn out to be the black box then I have a spare one that I am willing to sell. I was trying to retro fit sensors to a Mk2 ZT and got this box by mistake as they are different on the Mk2 as I have found out. Anyway the box has been tested on my Mk1 Connie and is working fine. Jim
I would be looking at around Ã‚Â£15 + postage but that said I have just spotted one on ebay that may be better (I paid the same price for the same item(s) inc loom so this might be better for you in the longer run?)