The relays for the blower are under the hood, near the top of the firewall on the passengers side. You will need to remove the plastic "fuse cover" to access them below the fuses. Replace them one at a time to see if this fixes the problem. If the blower is running intermetantly, then you may find you have to replace the blower motor (I needed to do this on my car $45). In order to do this you'll have to remove a bracket and several other lines in front of the blower motor to get enough clearance. If it works only at certain fan speeds then also check the blower resister located under the relays.
First you need to troubleshoot the 1994 LeSabre cruise control. Check the fuse, the cruise switch, the linkage, to find where the problem is. Check the vacuum lines on the engine as a vacuum leak can cause the cruise to not work properly.
That seems to be a common problem on the 1998 models. From what I have read, it seems to be bad soldered connections in the radio.
Can you explain the question in more detail?
If it is purely a Venn diagram problem then you cannot. Venn diagrams offer a way of solving certain types of problems graphically.
Problem is most Likely the ground wire on the motor by the thermostat
read the story and find out what the problem is.
It sounds as if you have either a power or ground problem at the motor.
Leaking from? Hose Water pump Intake gasket
solving the problem
You could start with the Haynes manual for your car , manual 19020, this will have most of the wiring diagrams you are looking for. Or if you have a good mechanic ,he should not mind using his connections to get more detailed info for you. mine helped me out with no problem.
The check engine light comes on in a car when there is a problem with the engine. It will go off or be reset when the problem is fixed.
I believe there isn't one, i have a '91 LeSabre and it doesnt have one. 87- 91 Lesabres are exactly the same cars, so it seems like you have a problem with your headlight staying on all the time. If that's the problem then i cant help you.