blower motor peterbilt 379

[davewest4]

When I turn on my cab or sleeper blower motor get a lot of noise thru my raido speakers. I cleaned the grounds didn't help. Anyone have any ideas what might be going on here?

 

[BigCat]

Did you check speaker and radio grounds or just blower motor?

 

[davewest4]

Just blower motor.

 

[BigCat]

Also check power and grounds to speakers. I have had engine notice come through the speakers and it was grounding out to the power wire.

 

[davewest4]

Ok, Thanks!

 

[petercar]

have you change anything, right before the noise started ?