Air horn system

[javcamac]

Hi to all... I have a problem with my air horn system. When the Jeep radio is off the air horn system work perfect. But when the Jeep radio is on, there is a feedback noise and the air horn system not work.
I separate the cable from the battery but that does not work.
Any help please let me know...thanks.

 

[TerryMason]

Do they share a common ground? You could try running each ground to the battery.

 

[javcamac]

Ok I will check and let you know. Thanks.