Thanks for that David & Arthur!

(& sorry for the other post - I thought I better try starting one myself after I'd already posted that one...)

I was having issues sorting out which sensor to disconnect for High aux fan but finally found it before I posted last night.

I think I have worked out which pigtail terminals to jumper to test low aux fan. And where those annoying relays are. I'll check these tonight.

The rest of the system is hopefully OK - I replaced the radiator, thermostat, fan clutch, & everything in the A/C last year - I figured you can't muck around when its 45C outside...

Thanks again.

PS - David - don't know if you'll care but the Dogs won the footy again this year beating the Bays, but the only stuff in the paper now is about the Adelaide United soccer team playing off in the Champions League tonight.