Quote Originally Posted by Burwell Mike View Post
I think the climate control on V8's has a different ecu. Some time ago I fitted an aftermarket control panel from Mat at DMGRS which would not work on the V8 (full heat whatever setting it was on). This panel works perfectly on standard cars so something is different on the V8. Sorry can't help with other items.

Mike
Odd thing is that a regular 75 panel (2000 and 2003, MGR) works just fine in my R75V8 and vice versa. Was playing around swapping them a few years back to see if that improved things, which it didn't, of course. Part number is identical on all of them, so there is something odd about the 'after-market' panels (MG7?) only perhaps. Differences in the HVAC design between 260 and RV8 are well known of course, as well as the obvious major differences between V8/non-V8 of both variants. Looks like that stretches to other HVAC electronics bits-and-pieces rather than the panel and its packaged electronics, from what you say Mike.

David