dashboard resistors

[BCA]

I have been playing with voltage dividers from the T16 instrument panel. They consist of an insulated block on which there are mounted 2 resistor with metal grills, in series. A single similar-looking resistor is in the Canadian Mk2 Carrier panel. I'm not sure what is in a Mk1 panel. Lots of Ford products probably used these to reduce the voltage for the coil. In the T16, which is 12 volts, I think one resistor reduces voltage to be suitable for the gauges and the 2nd resistor is for the coil.
Has anyone measured the resistance any of the resistors use on Canadian Carriers or the American T16? I am hoping for some interchange since I have extra T16 resistors: my cheap ohmmeter says one is 4 ohms and one is 7 ohms. Similar to Mk1 or Mk 2 ??
... Brian