Etwenty1 45 Report post Posted September 11, 2020 (edited) Hi, I’m looking to buy a used aux fan for my e53 diesel and am trying to find a simple way to test it prior to buying, fan is in CHCH and I’m in bay of plenty. looks like you need a signal generator or another X5 to plug it into. Would a good auto sparky be able to test it? Cheers Edited September 11, 2020 by Etwenty1 1 Quote Share this post Link to post Share on other sites