'84 Westy, Digijet, 1.9L case with a 2.2L GoWesty kit

 I've often suspected a less than ideally working AAR.  My cold idle is sometimes wonderful, sometimes choppy, sometimes "wandering" (up and down).

 It's so darn hard to reach the AAR connector without taking out half the right side of the engine ancillaries.

So I have a used spare on the bench, as well as a charged spare battery.

Question:  How can I test the open/close mechanism of the spare AAR?  Can I simply power it by connecting leads from the battery to the "Heating coil terminals" on the AAR?  And when I charge it, should the "gate" close or open?

Please advise and thanks!

Once I have the answer I'll dig into the one on the engine and check the installed AAR.  Bentley 24.28 provides cryptic instructions (and I need to wait for the engine to cool to "pinch the hose").  Regarding 24.28, what is the voltage measurement that I should see when I check the connector, and ("with the engine running") should the engine be warm or cold when I measure voltage?