Are these 5 components linked somehow?

I've got this annoying speaker noise (i can hear engine shifting in a sqeaky kind of way thru them) that happens intermittently when the wiper are on.

Additionally, at certain times, if I hit the horn, the blower motor will stop. I either have to wait and it will come on itself or I have to shut the AC off and then on again.

My indy is backed up big time and I have no clue about anything under the dash.

Any thoughts appreciated.

BTW, 300SDl, 349K miles, standard Becker radio. No alterations that I know of.

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Enough about me, how are you doing?

Everytime I have ever seen issues like this it was a bad ground causing it.

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Jim

That is what I was going to say a bad ground.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

I had trouble with bad grounds in my 115/300d. A local mechanic told me that MB is bad about having all ground wires come back to a common ground under the dash. If this ground screw/bolt come loose some grounds may work while others may not. I have never seen this Medusa nest of grounds so can't direct you to it but I understand it does exist.

I'll schedule and appoinment at another Indy shop and have htem look. I'm 6'4" tall and 245lbs. I can't be bending that much to get under the dash. Or console for that matter.

__________________
Enough about me, how are you doing?