car keeps draining the battery

92 bonneville keeps draing the battery i had alt checked its ok i had battery charged its ok i repaced spark plug wires and i still have the same problem

Your issue involves a parasitic drain from one of the systems. The first place to check would be the obvious, trunk light, glove box light, under hood light and etc. If that doesn't solve the problem they you will need to track it circuit by circuit with a volt meter. Can be very time consuming. Just remember that there will always be some minor drain due to the computer but only a few milliamps.

Glove box light was my problem.