1994 Oldsmobile Cutlass Supreme wiring

Turn Signals When Towing a
Trailer
When you tow a trailer, your vehicle has
to have a different turn signal flasher
and extra wiring. The green arrows on
your instrument panel will flash
whenever you signal a turn or lane
change. Properly hooked up, the trailer
lights will also flash, telling other
drivers you’re about to turn, change
lanes or stop.
When towing
a trailer, the green arrows
on your instrument panel will flash for
turns even if the bulbs on the trailer are
burned out. Thus, you may think
drivers behind you are seeing your
signal when they are not. It’s important
to check occasionally to be sure the
trailer bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear
before you start down a long or steep
downgrade.
If you don’t shift down, you
might have to use your brakes so much
that they would get hot and no longer
work well. On
a long uphill grade, shift down and
reduce your speed to around
45 mph
(70 ltm/h) to reduce the possibility of
engine and transaxle overheating.
If you are towing a trailer and you have
an automatic transaxle with Overdrive,
you may want to drive in
3 instead of D
(or, as you need to, a lower gear).
Parking on Hills
You really should not park your vehicle,
with a trailer attached, on a hill.
If
something goes wrong, your rig could
start to move. People can be injured,
and both your vehicle and the trailer
can be damaged.
But if you ever have to park your rig on
a hill, here’s how to do it:
1. Apply your regular brakes, but don’t
shift into
P (Park) yet.
2. Have someone place choclts under
the trailer wheels.
3. When the wheel choclts are in place,
release the regular brakes until the
choclts absorb the load.
4. Reapply the regular brakes. Then
apply your parking brake, and then
shift to
P (Park).
5. Release the regular brakes.
When You Are Ready to Leave
After Parking on a Hill
1. Apply your regular brakes and hold
the pedal down while you:
Start your engine;
Shift into a gear; and
Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear
of the chocks.
4. Stop and have someone pick up and
store the chocks.
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4. Now adjust the vertical aim. Check
the vertical aim for each headlight
and adjust it as necessary.
5. Turn the vertical aiming screw until
the bubble in the level is centered at
C
(zero).
To Replace a Headlight
(2-DOOR MODELS)
Before replacing a headlight that does
not light, check to make sure that the
wiring connector is securely fastened to
it.
See the
Index under Replacement
Bulbs
to check the size and type of
headlight you need to use before you
begin to replace the headlight.
You
must replace a headlight with one that
is exactly the same.
1. Pry up the plastic pins and remove
the headlight cover. 2. Remove the Torx@ head screws at the
end
of the aiming ring. The aiming
ring will swing open like a gate.
3. Remove the aiming ring from the
assembly.

Service & Appearance Care
4. Remove the wiring connector fkom
the headlight s~ocltet by lifting the
plastic locking tabs on the connector
and pulling it
from the socket.
5. Check the new headlight again. The
number
on the top of the light (A)
must match the number on the
headIight being replaced. The letter,
U or L, must also match.
5. Plug the wiring connector into the
headlight s-oclcet. Snap the locking
tabs onto the socket.
headlight
assembly. The socket must
be pointing-in the same direction the
socket an the burned-out bulb was.
7. Place the new headlight in the

.. .
.Headlfght Replacement
(4-DOOR MODES)
See thelndm under Replacement
Bulbs
to check thetype of bulb to use.
To Replace a Bulb:
1. Turn the-Lshaped bulb assembly
counterclockwise
M turn until the
flanges-align with the slots
in the
retainer ring,
You may need to twist
it back and
forth slightly to loosen it.
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2. Pull out the bulb assembly.
3. Disconnect the bulb wiring harness
from the socket bulb assembly by
.lifting the plastic locking tab.
4. Snap. a new bulb assembly into the
wiring harness.
-5. Replace the bulb .assembly by
reversing step one.
Taill[ght Bulb Replacement
(2-DOOR MODES)
For the type of bulb, see the Index
under Replacement Bulbs.
1. Remove the two large plastic Screws
and pull the carpet away from the
rear corner of the trunk.

Service & Appearance Care
Add-on Electrical
Equijment
NOTICE:
Don’t add anything electrical to
your Oldsmobile unless you check
with your dealer first. Some
electrical equipment can damage
your vehicle and the damage
wouldn’t be covered by your
warranty. Some add-on electrical
equipment can keep other
components from working as they
should.
Your vehicle has an air bag system.
Before attempting to add anything
electrical to your Oldsmobile, see
Servicing Your Air Bag-Equipped
Oldsrnobile in the Index.
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1 Fuses & Circuit Breakers
The wiring circuits in your vehicle are
protected from short circuits by a
combination of fuses, circuit breakers,
and fusible thermal links in the wiring
itself. This greatly reduces the chance of
damage caused by electrical problems.
Some fuses are located
in a fuse block
in the glove box as shown.above. To
locate the fuse block, lift out the storage
bin inside the glove box. See the
diagram later in this section. Another
set of fuses is located in the
component center, under the
instrument panel.
Additional fuses are located in the
underhood electrical centers
on the
right and left sides of the engine
compartment.

Service &Appearance Care
Headlight Wiring
The headlight wiring is protected by a
circuit breaker in the component center.
An electrical overload will cause the
lights to go
on and off, or in some cases
to remain off.
If this happens, have your
headlight system checked right away.
Windshield Wipers
The windshield wiper motor is protected
by a circuit breaker and a fuse.
If the
motor overheats due to heavy snow,
etc., the wiper will stop until the motor
cools.
If the overload is caused by some
electrical problem, have it fixed.
Power Windows and Other Power
Options
Circuit breakers in the fuse panel
protect the power windows and other
power accessories. When the current
load is too heavy, the circuit breaker
opens and closes, protecting the circuit
until the problem is fixed.