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Heated rear screen wiring - Example 1 - Standard Relay
As requested here is more or less how I would patch in a realy for a heated screen.
This is a fused system supplied direct from battery and controlled off the switched ignition feed (typically white wires off ignition switch on Imp)
Your heated screen draws a LOT of current and you absolutely do not want to have it on all the time.
If you are fitting a rear sceen thats where the relay should be.
A timer is preferred but this is simplest, on off with illuminated switch and just one consideration is where the switch is as you might NOT see it in daylight !
On a standard system it is pretty close to battery drain on a dynamo as the dynamo supplies more or less the demand for the heated screen, so with lights on etc, it will go pear shaped.
So the bits !!!!
An On/Off lever switch which is illuminated, cheap as chips and easy to wire.
Will connect at back of dash binnacle with next to no work, all spades on / off to connect, it must be connected to the switched side of the ignition which is Pin 2 on the ignition switch (white wires) on a binnacle dash.
If you are after the wiring diagram for your car CHECK HERE
The switch will control the relay and this is a switched supply, the other end of the relay coil is taken to chassis.
Use small spade to eyelet loop and use screw fixing for relay as chassis connection, saves messing around.
The realy is connected to the battery via an inline fuse holder and 30A blade fuse.
This can all be tucked beside solenoid in engine bay, in fact you can take the 12V feed straight off the live side of the starter solenoid ! which leaves only one wire to the heated screen and one small wire to front of car.
So the example below, any questions please ask away but hopefully that will clear up the actual parts needed and give you a route to follow
As requested here is more or less how I would patch in a realy for a heated screen.
This is a fused system supplied direct from battery and controlled off the switched ignition feed (typically white wires off ignition switch on Imp)
Your heated screen draws a LOT of current and you absolutely do not want to have it on all the time.
If you are fitting a rear sceen thats where the relay should be.
A timer is preferred but this is simplest, on off with illuminated switch and just one consideration is where the switch is as you might NOT see it in daylight !
On a standard system it is pretty close to battery drain on a dynamo as the dynamo supplies more or less the demand for the heated screen, so with lights on etc, it will go pear shaped.
So the bits !!!!
An On/Off lever switch which is illuminated, cheap as chips and easy to wire.
Will connect at back of dash binnacle with next to no work, all spades on / off to connect, it must be connected to the switched side of the ignition which is Pin 2 on the ignition switch (white wires) on a binnacle dash.
If you are after the wiring diagram for your car CHECK HERE
The switch will control the relay and this is a switched supply, the other end of the relay coil is taken to chassis.
Use small spade to eyelet loop and use screw fixing for relay as chassis connection, saves messing around.
The realy is connected to the battery via an inline fuse holder and 30A blade fuse.
This can all be tucked beside solenoid in engine bay, in fact you can take the 12V feed straight off the live side of the starter solenoid ! which leaves only one wire to the heated screen and one small wire to front of car.
So the example below, any questions please ask away but hopefully that will clear up the actual parts needed and give you a route to follow
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