Quote:
Originally Posted by planenut
I do see what you say in respect of the fast speed proof, though when I'm looking at the two relays, there is nothing printed on them to indicate to me which is high and which is low.
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On a resistor system the large relay controls the fast speed and the small relay (located in the centre of the control box) controls the slow.
Regarding testing the slow speed relay, as you say that your silver resistor has continuity, running the demist test will prove that. It really is the easiest and safest way to check the relays but you can, if you prefer, remove them for testing on the bench using a 12v supply and your multimeter across the contacts.
Simon