Radio & A/C switches face plate

[gwittman]

I have a question regarding the lower dash face plate that the radio and A/C switches mount on. It seems there is a different part number for the early (69/70) Coupes compared to the later (~71-74). Does any one know what the difference is and would they be interchangeable other than possibly appearance?

 

[sfdon]

51161811435 ?? part #12

http://www.realoem.com/bmw/showparts.do?model=7031&mospid=47808&btnr=64_0879&hg=64&fg=55

 

[Dorchester]

I think the question is what's the difference between 51 16 1 811 435 and 51 16 1 820 923.
http://www.realoem.com/bmw/showparts.do?model=3435&mospid=47811&btnr=64_0879&hg=64&fg=55

 

[gwittman]

Yes, Dorchester has it right in detail and yes, sfdon, I am referriing to part #12 that is called a cover instead of a face plate.

Actually, all I really need is the blower switch (64511811981) but I don't see them available very often. I came across a cover with both switches and would use the whole thing as long as the cover is in better shape than mine and has no significant difference.

 

[sfdon]

Double 02 in hayward had a box full of used blower switches available as of 3 weeks ago. They also had a few covers. I paid 25 bucks I think for the cover. Problem is they alll seem to get hacked up by stereo installations.

 

[sfdon]

Just left double 02 - they have 10 of the switches in stock. [used]

 

[gwittman]

sfdon, thanks for the lead. I did call them and they want a little to much for my needs. I am pretty good at taking things apart and repairing them. I think I will give that a try before emptying my wallet on another used one that may develop a problem with use.

 

[x_atlas0]

If it is anything like the Hazard switch (meaning, largely mechanical) I'd bet money you can "restore" the switch pretty easily with a new resistor and a soldering iron, or at best scraping off some of the oxidation on the switch range.

 

[gwittman]

The fan switch still works with respect to fan control. The problem I have with it is I have to fiddle with it to shut off the A/C compressor when in the off position. I suspect something has broken loose inside.

 

[x_atlas0]

The fan switch still works with respect to fan control. The problem I have with it is I have to fiddle with it to shut off the A/C compressor when in the off position. I suspect something has broken loose inside.

Are you sure your AC compressor clutch relay is ok? You know how sticky old relays get.

 

[gwittman]

Thanks for pointing that out. I will check it out in more detail before I tear into the fan switch. However, I can get the A/C clutch to cycle with the temperature control switch so it is most likely the fan control switch has a problem.

 

[cpeavey]

I'd be interested to hear if you can fix your switch.

I have a similar problem with mine. As I turn it up from off, the compressor runs fine, until I move it into the first click, whereupon the compressor cuts out. If I turn the blower switch to the highest setting, the next click stop, the compressor resumes, or if instead I back it down off the stop into the continuously variable range, it will also turn back on. Something has gotten loose in the switch mechanicals. So far, I can live with this, but I'm afraid it will get worse.

Charlie
'74 3.0CS

 

[gwittman]

Charlie, I will post when I get the time to get in there and check it out. Happy to share any 'fix it' knowledge I can come up with.