Test Tachometer

[wscheffer]

Hello everyone,

I have the instrument panel off of my 1987 420 SEL.

Does any one know how to safely test the electrical leed that connects to the back of the tachometer for signal?

 

[television]

Hello everyone,

I have the instrument panel off of my 1987 420 SEL.

Does any one know how to safely test the electrical leed that connects to the back of the tachometer for signal?

With an oscilloscope, its the only way

 

[wscheffer]

Thanks again Malcolm,

Oh I forgot in my reply in the other thread about the battery that the weather is clear and in the eighties.