How to wire dash lights - Defender Source
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  #1  
Old May 30th, 2014, 07:05 AM
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Chris Velardi
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How to wire dash lights

What is the proper way to wire the dash gauge lights to come on with the head light switch instead of the dash toggle switch that does in interior lights? Wire colors would be appreciated. And if you do jump the power from the head light toggle switch to the gauge lights, must the old wire from the toggle switch to the gauge lights be removed ? ( this is for an older 1989 110 5 door station wagon.)
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  #2  
Old May 30th, 2014, 08:00 AM
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Instrument lighting is red with white tracer. Should come off position 1 of the lighting switch. Since the days of Series vehicles, the instrument lights have always been on red wire.
Typically, it goes like this: Brown is unfused hot direct from battery. White is unfused switched power from ignition switch. Green is fused switched power. Purple is fused always hot. Black is ground.
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1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

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Old May 30th, 2014, 09:15 AM
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So what color wire comes from the position 1 of the lighting switch ? and should I sever the wire coming from the old toggle switch ?
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Old May 30th, 2014, 09:30 AM
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Red, which goes to fuse 16 which then feeds the red/white:

INTERIOR ILLUMINATION
DESCRIPTION
When the side lamps are switched on, the interior controls and gauges are
illuminated so they can be easily located during night driving. Interior
illumination is not controlled by the ignition switch.
OPERATION
Feed from the positive battery terminal is connected to fusible link 1 (C632-1)
of the engine compartment fuse box by a brown wire. Current flows through
fusible link 1 (C907-1) and onto the lighting switch (C041-1) on a brown wire.
With the lighting switch in either the side or head lamp position (C041-2),
current will flow to fuse 16 of the passenger compartment fuse box (C580-31)
on a red wire. Fuse 16 of the passenger compartment fuse box (C580-32)
supplies a feed to the following;
• Speedometer (C927-1 & C926-1) on a red/white wire.
• Fuel gauge (C924-1) on a red/white wire.
• Engine coolant temperature gauge (C735-1) on a red/white wire.
• Cigar lighter (C074-1) on a red/orange wire.
• Clock (C095-1) on a red/white wire.
All of the above are connected in parallel and are earthed on black wires.

EXTERIOR LAMPS - Head, Side and Number Plate Lamps
DESCRIPTION
The lights are operated from the lighting switch located on the steering column.
The lighting switch has two positions. Position 1 switches on the tail lamps, the
number plate lamps, and front side lamps. Position 2 additionally switches on
the front headlamps. When the headlamps are on, the column switch can be
used to switch between main beam and dipped beam.
The headlamps can be flashed with the lights on or off, by pulling the column
switch towards the driver.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C632-1) by a brown wire. Current passes through fusible link 1 and
fusible link 2, which are connected in parallel. Power from fusible link 1 (C907-
1) feeds the lighting switch (C041-1) on a brown wire.
Side Lamps
With thelighting switch in the side lamps position, power flows through the light
switch (C041-2) to fuse 16 (C580-31) and fuse 15 (C580-29) of the passenger
compartment fuse box on red wires. Fuses 16 and 15 are connected in parallel,
fuse 16 feeding the RH lamps, fuse 15 the LH lamps.
Fuse 16 of the passenger compartment fuse box (C580-32) is connected to the
RH front side lamp (C537-2) by a red/orange wire. The lamp is then earthed
(C537-1) on a black wire. Fuse 16 also feeds the RH trailer pick-up (C418-1)
on a red/orange wire. This is connected in series with the RH tail lamp
(C401-3). The tail lamp is earthed (C401-1) on a black wire. Also connected in
parallel with the RH front side lamp is the side lamp instrument pack warning
lamp (C233-5), which is fed by a red/orange wire. The warning lamp is earthed
(C233-2) by a black wire.


INSTRUMENTS
DESCRIPTION
The vehicle relays information to the driver via the instrument pack. The
instrument pack contains lamps and analogue gauges. The colour of the lamp
denotes the severity of the information. Warning lamps are red, caution lamps
are orange, green and blue lamps indicate that a system is operating.
The analogue gauges relay information to the driver such as engine speed and
engine temperature.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C632-1) by a brown wire. Current passes through fusible link 1 and
fusible link 2 of the engine compartment fuse box, which are connected in
parallel. Fusible link 1 (C907-1) is connected to the lighting switch (C041-1) by
a brown wire, and fusible link 2 (C907-2) to the ignition switch (C028-1).
Fusible link 2 is also connected to fuse 2 (C580-3) of the passenger
compartment fuse box. Both are connected by brown wires.
With the lighting switch in either the side or main lamp position (C041-2),
current will flow to fuse 16 (C580-31) of the passenger compartment fuse box
on a red wire. Fuse 16 of the passenger compartment fuse box (C580-32) is
connected to the instrument pack (C233-3) by a red/orange wire and supplies a
feed to the side lamp warning lamp.
A permanent battery feed is also supplied from fusible link 2 of the engine
compartment (C907-2) to fuse 2 (C580-3) of the passenger compartment fuse
box. Fuse 2 (C580-4) is connected to the column switch (C036-7) by a purple
wire. When the column switch is closed (C036-5) a feed is sent to the main
beam warning lamp (C233-5) within the instrument pack on a blue/white wire.
The warning lamp (C233-2) is earthed on a black wire.
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Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
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  #5  
Old May 30th, 2014, 09:50 AM
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Thanks Bill
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  #6  
Old May 30th, 2014, 10:34 AM
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Michael Fluent
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Bill you are awesome! When you need to get back to sea let me know.
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  #7  
Old May 30th, 2014, 10:38 AM
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Quote:
Originally Posted by 1775NavyMike View Post
Bill you are awesome! When you need to get back to sea let me know.
Come help me with my damn power boat.
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Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
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  #8  
Old May 30th, 2014, 10:49 AM
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Michael Fluent
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Bill, if it doesn't have a grey hull or a sail you are asking for trouble. Hell your are asking for it anytime you go to sea.
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