[redmodelt]

"If that converter works, you won't need to isolate anything." Please tell us nobs, if the chassis of the car is positive ground and you attache the negative grounded CB/radio case to the body or other metal part how is that going to work out? If you install something in a positive car it has to be positive ground specific, does it not? Isn't that why you bought radios that were ether - or + or could be switched between the two. How does the converter isolate the - ground radio or CB from + ground.