Take off master cylinder of 97- mercury sable

SOURCE: cigarette lighter

First check the fuse... then try using a test light to check for power in the socket. If there is power replace the lighter coil... if not look for a loose wire behind the socket... Hope this helps...;-)

SOURCE: removal of 97' merc. sable headrest

lift headrest all the way up then insert a pic in the tiny hole on the left column

SOURCE: Where is the air conditioner compressor relay

The relay for the air conditioner compressor is located in a black box on the radiator support. this is a multi-function relay box and is sealed. This box has a large bundle of wires plugged into it. This controls the fuel pump, A/C compressor, and cooling fans. Unfortunately, the whole thing will have to be replaced which will cost around 100 dollars unless you can find one in a salvage or junk yard.

SOURCE: I have no pressure in my brake lines.

Make sure youre bleeding the lines correctly. Also you may have purchased a faulty master cylinder, trust me on that i bought two back to back and they were bad batch. check for cracked lines throughout the system.

SOURCE: 1992 3.0L Mercury Sable cylinder numbers and

For the 1992 Mercury Sable 3.0L V6:

Firing Order:
1-4-2-5-3-6

Cylinders:
...........(back)...........
|...1.........2.........3...|
...............................
|....4........5.........6...|
...........(front)

Distributor:
......(back)
........(+)-screw
....3........6
5...............1
....2........4
........(+)-screw
......(front)

Let me know if this helped, or if you have additiional information or questions. Feel Free to contact me at FixYa.com!