99 aurora light switch problem

When the light switch is off it makes a zapping sound under the steering wheel, Even with the car off and the key out of the ignition. It drains the battery. if the light switch is on there is no problem but obviously leaving the lights on when the car is not running is not an option. Im thinking about putting a "kill switch" in the back seat off of the battery positve cable. any solution's or suggestions short of that??? also have a rusted out fuel line and was

sorry i dont have any idea why that posed so many times if anybody knows please let me know so I can correct the problem for future posts! again I'm SORRY

Welcome to AF.

Not a problem. I removed the excess posts. We have been having technical posting issues on and off.

When the light switch is off it makes a zapping sound under the steering wheel, Even with the car off and the key out of the ignition. It drains the battery. if the light switch is on there is no problem but obviously leaving the lights on when the car is not running is not an option. Im thinking about putting a "kill switch" in the back seat off of the battery positve cable. any solution's or suggestions short of that??? also have a rusted out fuel line and was
Give this link a try.

http://www.howardm.net/dred98/underhood.php