Diagnosing diesel rev counter

[barneyrubble]

Hi all can anyone help me with a few pointers for diagnosing my rev counter. The van is still very alien to me, from a driving point of view and I would love to know how hard (or not) I am pushing it.

Apparently the rev counter used to work (according to the old owner) who has no reason to lie since I bought it as a non- runner, I can see that there is a red/black cable connected to the W terminal from the alternator



Is there a way of testing the output from the alternator? Or sending an output to the rev counter to test it? Any pointers on next steps?

Thanks in advance

Matt

[barneyrubble]

I've also been looking at why my glowplugs dont work, turns out they are working but the bulb in the dash is not telling me so - so I guess I have some dodgy wies/connectors in the dash pod.

Anyone else suffered this? Any advice?

[syncroandy]

Check the condition of the 14-way edge connector to the dash panel first. Both the flexi pcb plug side and the socket side on the end of the harness.

[Oldiebut goodie]

Check your voltage here also - terminal L