<VV> VirtualVairs Digest, Vol 38, Issue 74

[Mr Lew Rishel]

>
> My '69 Monza with a 140 has a tachometer in place of the clock. How could 
> I
> check if the tach is working and secondly where do I connect the tach to.
>
> first off, if the engine is running, the tach should give you an 
> indication. Since you have asked, I figger it aint doin' that. So. some 
> checking is in order. Do you know if there is a wire connected to the tach 
> ?? If so, get a test lite, connect the wire end to ground. Touch the test 
> lite tip to the drivers side terminal at the back of the tach. If the lite 
> fickers (engine idling, please), you have a tach signal, and the wiring is 
> OK.   Now touch the other terminal, it should be 12 v, so should be a 
> constant lite.
If either of these signals is absent, more checking is in order.
Please let me know what you find with these tests, so I can help you 
further.
Lew