Err, Umm, Wow. Thank God for Greeners.

bigbaldbloke · 18th July 2015, 14:03

As some of you know from this thread, my fan controls had been bypassed by a previous owner/"mechanic", leaving me with an ugly manual switch in the dash. After taking the bumper off, I could see the control box bypassed, and 4 wires hacked into just before they entered the fan casing. What I couldn't understand was why 2 of these wires were heavy gauge, but the other 2 were more like control signal cables. Well now we have the answer........

Greeners foolishly/bravely/suicidally offered to help me take the whole lot apart this morning, with the hope of sorting this bodge-job out. What we found was, err, different.

As posted in the above thread, the control box was outside of the fan unit, wedged between the fan and the intercooler pipe. So off came the fan today, and what did we see but.......

Yep, not one but 2 control boxes, with the dangly one sort of feeding the other.

Greeners worked his magic, and before you know it we had the arrangement in all its glory laid out in front of us.

So diesel and petrol control boxes, wired together along with a direct live from the cabin switch, and a new earth for good measure.

I'm delighted to say that, having looked at some of David's spares and a few photos, followed by a circuit diagram, we (i.e. Greeners) made the necessary adjustments to remove the petrol box and get the proper 2 wire, 2 speed config in place.

So Guinness World of Records - is this the first Rover 75 to have TWO control boxes? Most importantly, demist test works great, car reassembled and now for some on road testing.

Massive, massive respect to David for his awesome help and quality standards.

Kev

18th July 2015, 14:03	#1
bigbaldbloke Gets stuck in Rover 75 CDT Connie SE Auto Join Date: Feb 2014 Location: Welwyn Garden City Posts: 531 Thanks: 118 Thanked 81 Times in 78 Posts	Err, Umm, Wow. Thank God for Greeners. As some of you know from this thread, my fan controls had been bypassed by a previous owner/"mechanic", leaving me with an ugly manual switch in the dash. After taking the bumper off, I could see the control box bypassed, and 4 wires hacked into just before they entered the fan casing. What I couldn't understand was why 2 of these wires were heavy gauge, but the other 2 were more like control signal cables. Well now we have the answer........ Greeners foolishly/bravely/suicidally offered to help me take the whole lot apart this morning, with the hope of sorting this bodge-job out. What we found was, err, different. As posted in the above thread, the control box was outside of the fan unit, wedged between the fan and the intercooler pipe. So off came the fan today, and what did we see but....... Yep, not one but 2 control boxes, with the dangly one sort of feeding the other. Greeners worked his magic, and before you know it we had the arrangement in all its glory laid out in front of us. So diesel and petrol control boxes, wired together along with a direct live from the cabin switch, and a new earth for good measure. I'm delighted to say that, having looked at some of David's spares and a few photos, followed by a circuit diagram, we (i.e. Greeners) made the necessary adjustments to remove the petrol box and get the proper 2 wire, 2 speed config in place. So Guinness World of Records - is this the first Rover 75 to have TWO control boxes? Most importantly, demist test works great, car reassembled and now for some on road testing. Massive, massive respect to David for his awesome help and quality standards. Kev