Completed the construction of the switch device for configuring the tacho. The procedure went well.
However, when I started the engine the reading stayed at 0 rpm. Traced the problem to a broken wire at the alternator W lug. Got down to Maplin in Stafford to get some stuff for repairing the link. That included a 40W soldering iron set.
The wire was difficult to work on because the engine coolant hoses were in the way, stopping me getting easy access with the crimper. Eventually I stripped down a connecter to its metal core, and was able to crimp it with the small electrical pliers. That enabled me to extend the wire with a short length of the red core from 18 amp ring mains cable.
Back was killing me by the time that was done!
