Problem: excessive battery drain when the SRS and ABS dummy lights come on intermittently when the car is running. if the lights do not come on, there is no battery drain and the car starts up fine. the car is a 1990 350sdl

What's been done: I have receipts for
-new bosch alternator
-new OVP relay
-new autozone battery
-new glow plug relay

All within the past 3 months and correctly installed .it still has the problem.

Please help me diagnose this problem. I would hate to think i got suckered when i bought this car.

__________________
Jennifer
90 350sdl