760 Instrument V Regulator?

[Dirty Rick]

84 760

What is the value of the resistor in the instrument cluster voltage regulator circuit?

It is behind the fuel gauge in the lower right corner looking at the back of the cluster.
It is soldered into the trace and lives in a cavity behind the circuit trace sheet.

Looks like a wire wound 1 or 2 watt resistor.

The regulator is #93 on the diagram Grid F-4

The resistor is shown but not identified or given a value.

 

[bobxyz]

On a 240, it's 10 ohms and goes between ground and the center regulator pin (Thanks Art!) - see: http://cleanflametrap.com/speedo5/pages/speedo530.html

 

[cleanflametrap]

On a 240, it's 10 ohms and goes between ground and the center regulator pin (Thanks Art!) - see: http://cleanflametrap.com/speedo5/pages/speedo530.html

Yup on a 240 it is a 1/4-watt metal film 10-ohm using the same automotive regulator chip. Can't see why it would be different on a 7-series, nor can I say why it smoked in this one.

 

[Dirty Rick]

I know how I smoked it, I got the 3 wire plug behind the speedo backwards.

It measured 9 ohms so I stuck the dash back in.

It's all good, thank you!