Hi all I have a s2 rs turbo 1989, After having my whole engine rebuilt( obviously everything entailed around it also) i have stumbled across a wiring issue, my rad fan plugs into a loom that falls where its needed however is the sensor on the thermostat housing the rad fanswitch? if so i have no loom for this? please help!! what colour are they? where is it? I have nothing outstanding to plug in, bar a circular yellow plug nere tghe bulk head which doesnt look right?