Range Rover County LWB (LH) V8-4.2L (1993)
![background image](/landrover/range_rover_county_lwb_(lh)/v8-4.2l/Page-825030.png)
4. Each splice should be insulated before the harness is re-wrapped. This can be done one of two ways, with either electrical tape or heat shrinkable
tubing. If the splice is among several other wires in a harness, it may be very difficult to wrap electrical tape neatly around the splice. Therefore,
the use of heat shrinkable tubing is the preferred method for insulating a splice. To install heat shrinkable tubing:
A. Locate tubing of the proper diameter. The tubing should have a snug fit over the splice when it is completed. This means the tubing will have a
slightly loose fit over the wire insulation as the splice usually has a larger diameter than the wire.
B. Cut the tubing to the proper length. The tubing should be long enough to cover the splice and extend up the wire in each direction about 1/4
inch.
C. Slide the tubing over one of the wire ends prior to joining the wires for the splice.
D. After soldering the splice move tubing into place and shrink with a heat gun.
5. After completing all the necessary splices, check all repaired wires from connector to connector with an ohmmeter. A copper wire which has been
spliced correctly will have a resistance of 0 to 0.02 ohms, depending on its length and diameter.
6. Electrical tape can be used to re-wrap the harness. Start a few inches below the repair - to overlap original harness covering. Wrap tape in the
same direction as the original harness covering, overlapping each turn about 1/2 the width of the tape. Continue a few inches beyond the repaired
area. NOTE: Some harnesses are covered with a plastic conduit. Be sure to reinstall this where applicable.
7. Reinstall harness in vehicle and check operation of all affected circuits.
Wiring Harness Repair Methods
TYPICAL ELECTRICAL REPAIRS
An open circuit is an incomplete circuit. Power cannot reach the load or reach ground. If a circuit is open, active components do not energize. A short
circuit is an unwanted connection between one part of the circuit and either ground or another part of the circuit. A short circuit causes a fuse to blow or
a circuit breaker to open.
SPLICING COPPER WIRE
STEP 1: OPEN THE HARNESS
If the harness is taped, remove the tape. To avoid wire insulation damage, use a sewing "seam ripper" to cut open the harness (available from sewing
supply stores). If the harness has a plastic conduit, simply pull out the desired wire.
STEP 2: CUT THE WIRE
Begin by cutting as little wire off the harness as possible. You may need the extra length of wire later if you decide to cut more wire off to change the
location of a splice. You may have to adjust splice locations to make certain that each splice is at least 40 mm (1 1/2 inch) away from other splices,
harness branches, or connectors.
STEP 3: STRIP THE INSULATION
When replacing a wire, use a wire of the same size as the original wire, or larger. The schematics list wire size in metric units. The following table shows
the commercial (AWG) wire sizes that can be used to replace each metric wire size. Each AWG size is either equal to or larger than the equivalent metric
size. To find the correct wire size, use an appropriate wire gauge.
NOTE: If you aren't sure of the wire size, start with the largest opening in your wire stripper and work down until you get a clean strip of the insulation.
Be careful to avoid nicking or cutting any of the splices.
Remember that the splice should be at least 40 mm (1 1/2 inch) away from any other splices, harness branches, or connectors. STAGGER MULTIPLE
SPLICES.
Check the stripped wire for nicks or cut strands. If the wire is damaged, repeat the procedure on a new section of wire. The two stripped wire ends should
be equal in length.
WIRE SIZE CONVERSION TABLE
METRIC
AWG*
CONTINUOUS
SIZES
SIZES
AMPERAGE RATING
.4
22
2
.5
20
3
.8
18
4
1.0
16
5
2.0
14
25
3.0
12
46
5.0
10
96
8.0
8
140
13.0
6
285
19.0
4
425