Ignition Coil Resistor with Capacitor?

[seattle2002tii]

Purchased a 73 Tii a couple of months ago (replaces my 74 Tii).  Has a ignition coil resistor with odd capacitor? hanging off one of the terminals (see photo - blue capacitor).  Doesn't appear to be grounded very well.  This capacitor? doesn't appear in the BMW part diagrams.  Any reason for someone to add?  Is it stock?

 

Thanks for any help.

[ray_]

That's worth 15hp. Leave it.

 

I mean, I believe it's alleged to suppress radio noise.

 

 

Cheers,

[AustrianVespaGuy]

Might be serving the function of the condenser.

[Mike Self]

Ray's got it...radio noise suppressor--especially for AM.

 

mike

['76mintgrün'02]

look at this silly little thing that came on my coil.

consensus was that it wouldn't do much of anything.   

any ideas Ray? 

[ray_]

Don't ask me about your newfangled car, Tom.

 

[seattle2002tii]

Ok, makes sense as noise filter.  Since it's doesn't appear to be grounded well, I'm just going to remove and see if any impact on FM/AM radio.

[jimk]

A little Wikipedia reading is in order.

https://en.wikipedia.org/wiki/Applications_of_capacitors

 

Page down to: "Noise filters and snubbers"

 

Mount it to a ground and leave it alone.  Things are better with than without.

It works like the one on the rear of the alternator (if it hasen't been discarded by a no nothing)

Edited December 17, 2017 by jimk

[jimk]

I have a type in the above but I seem to have lost my editing capability.

[ray_]

I think the edit button changed to some nondescript icon.... which looks like a pen, next to "promote to article."

 

 

I can quote you, for prosperity

[jimk]

1 hour ago, ray_ said:

I think the edit button changed to some nondescript icon.... which looks like a pen, next to "promote to article."

Thanks Ray, you are a good thinker.

[ray_]

You misspelled stinker.

 

?

[Kuntacharlie]

Cannot add anything regarding the capacitor, but if static on the AM channel is a problem then consider replacing the antenna if it is old.  I had this problem with the 1970 vintage Audiovox radio in my 71 02.  The guy at a local auto sound store said that antennas degrade over time and need to be replaced at some point.  I was skeptical but followed the advise and replaced my 46 year old antenna.  Made a huge improvement.  It worked for me.

[RD02]

I had the same question about the gizmo grounded to my strut mount and hooked to the coil. One of the guys here said it was for radio noise suppression. I removed it when I changed the coil, no issues, but I don’t listen to AM either. 

   Robert