1997 Buick Lesabre My car will just die while driving down

1997 BUICK LESABRE
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JWJONES
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Electrical problem
1997 Buick Lesabre 6 cyl Front Wheel Drive Automatic

I have a 97 buick lesabre and have had problems with it just shutting down while driving down the road, and when it does we have no power windows or power seats and the fuel pump wouldnt work either. On a few occasions of it shutting down it was when i tried to use the power windows, as soon as i hit the button it would shut down. Usually after an hour or two we could get it to start back up, the last time tho we had to leave the car over night before we could get it restarted.
We have replaced the fuel pump, relay and ignition on it so far, the last break down occuring after we changed the ignition on it.
Scan test said ignition or the brain.....

Where could i find a wiring diagram for the car?

Hope you can help us....been battliing this for 18 months now!!
Nov 14, 2009 at 2:05 PM
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JACOBANDNICKOLAS
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Before you start replacing things, I need you to check all grounds. Since it affects everything, something tells me you are losing ground to the vehicle. Check and make sure the battery terminals are clean and tight, check the ground to the engine block, check for broken or rusted body grounds...

Let me know what you find.
Nov 23, 2009 at 9:44 AM
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