I used to have the same problem. You can easily fix this problem by using a ground-loop isolator, but some peopel will tell you that this is just a band-aid fix. The best way to fix it is to reground.
Now...grounding to the chassis is the recommended way to ground. you should sand a tiny circle of paint if any on it then get one of those loop connector deals and drill your hole. Use a tooth washer on both sides of the bolt you put in there and that will give you a better ground connection.
THis is the best way to fix this as far I know but there are other people more knowledgable than me.
Now...grounding to the chassis is the recommended way to ground. you should sand a tiny circle of paint if any on it then get one of those loop connector deals and drill your hole. Use a tooth washer on both sides of the bolt you put in there and that will give you a better ground connection.
THis is the best way to fix this as far I know but there are other people more knowledgable than me.