[DML] Feedback through CB when engine is running?

[PRC1216@xxxxxxx]

Hey all,
     I just installed a CB radio tonight in the D, and it seems to work fine 
until I have the engine running, then I get all kinds of feedback, and when I 
rev it, I can hear it through the CB.   I tried switching the ground for the 
CB antenna from the bolt back near the left rear quarter panel, to the parking 
brake ground, to the ground back in the electrical compartment behind the 
driver seat and I still have the same problem.   I have the ground for the CB 
radio itself to the parking brake ground bolt.   I am getting power from the fuse 
for the rear defrost and power mirrors, and I switched that to the battery 
directly and I still get the same problem when the engine is running.   Any ideas 
here?   Would something called a "ground loop isolator" be useful in this 
application?

-Patrick C. 
1880


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