well my relay works fine when i first turn the key and start the car, the plugs glow and light up just fine its just that when running the relay keeps kicking the plugs on so i want to put a switch in to turn off the relay after the car is started then when i turn the car off i can leave it off for a security device and turn it back on when i go to start my car again... theres got to be a wire i can just tap into for a switch, i dont need anything fancy i just want to add a switch to the relay i already have

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1985 mercedes benz 300D turbo diesel
1998 VW GTI VR6
1996 VW GTI 2.0
1999 saab 9-3 turbo
1987 300sdl (sold)