what do u want a diagram for
I agree with the previous answer, you did not specify what kind of diagram you want. Vacuum, Electrical, firing Order etc. etc.
The voltage regulator is inside the alternator.
I own a 1989 Sunbird GT turbo and the vacuume line diagram is located under the hood on the top left corner.
limited edition
You might want to go and look at some books at a Public Library.
14"
Fuel tank.
Remove oil pan
Using a key
On the '92 sunblrd SE the power for the lights to from fuse to headlight switch to dimmer switch to bulb, no relay involved.
under radiator cap
u will need a odb1 scanner,
under the dash right hand side.