nedd a little help with a knock sensor issue:

i have a AU engine running with a EL ecu, will the AU knock sensor work correctly or should i try and use a EL one?

my second question is: when you look at the AU knock sensor there is a red wire and a cream or white, what one is supposed to get the 5v and signal ground?

my third question is: just in case the AU knock sensor is faulty how do i test it?