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Heated rear screen wiring - Example 1 - TIMER Relay
As requested here is more or less how I would patch in a relay for a heated screen using a timer relay.
This unfortunately requires a seperate indicator to show when it is powered and needs TWO wires from front to back but neither are high current
One is for the momentary switch to "toggle" the relay for preset time and the other for the indicator on dash to show it is on.
This is same as these cheap switches supplied with electric washer kits OR a lever switch for same purpose, it needs to go "on" then "spring back" off.
This kicks of the timer relay to power the screen for your preset time
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 and is shown here, it is not the simplest as you need to run two wires rather than one but way better to flick the switch a few times than have it on all the time and forget to switch it off !
So the bits !!!!
A lever or push button switch, for example used for an electric screen washer jet, 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.
The relay 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 relay for a heated screen using a timer relay.
This unfortunately requires a seperate indicator to show when it is powered and needs TWO wires from front to back but neither are high current
One is for the momentary switch to "toggle" the relay for preset time and the other for the indicator on dash to show it is on.
This is same as these cheap switches supplied with electric washer kits OR a lever switch for same purpose, it needs to go "on" then "spring back" off.
This kicks of the timer relay to power the screen for your preset time
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 and is shown here, it is not the simplest as you need to run two wires rather than one but way better to flick the switch a few times than have it on all the time and forget to switch it off !
So the bits !!!!
A lever or push button switch, for example used for an electric screen washer jet, 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.
The relay 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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