Mod Description
Yes, the smart is narrow but the lack of passenger window control on the driver's side is unforgivable.Mod Details
PremiumYes Difficulty![](https://www.evilution.co.uk/wp-content/themes/evilution/images/evilution/menu-normal-over.png)
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![450 Fortwo 450 Fortwo](https://www.evilution.co.uk/wp-content/themes/evilution/images/evilution/model5.png)
Buy Or Make?
The 1st kit, I bought. If you want to buy one, look here.
SmartKits.net . Click here or scroll right down near the bottom of this page to see the fitting guide.The 2nd kit, I made. I had the wire and crimp terminals so all I needed was relays and the switch.
Making your own is very satisfying, not as hard as it might seem and will cost you less than £10.
Making Fitting The Home-Made Kit
You’ll need the following:
Crimper,
Spade connectors (red and blue),
Straight through butt connectors,
2x 5 terminal automotive relays,
A centre bias (on)-off-(on) switch,
Thick and thin wire,
Soldering iron & solder or those terrible quick connectors.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay8.jpg)
Remove the Torx25 screws from the handle and the Torx20 screws from the door pocket.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay1.jpg)
Grab the bottom of the door card and pull it to disengage the clips.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay2.jpg)
Pull the door card towards the font of the car to release. Repeat on the other side.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay3.jpg)
You now have access.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay4.jpg)
Reach behind the switch on the passenger’s side and push it out from the back.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay5.jpg)
Then disconnect the switch by pulling the unit from the connector.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay6.jpg)
The connector has 4 wires. We will be using some of these later.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay7.jpg)
Now you need to create the wires. Take a wire approximately the same size as the wires to the standard window switch.
Crimp a red spade terminal on the end. Measure back about 5cm and cut away the sheath. Bend the exposed wire and then crimp a blue spade connector to it.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay9.jpg)
Like this…
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay10.jpg)
Keep doing that until you have 4 spade connectors (1 red and 4 blue) on the same wire. Make the final length of wire about 1 meter long. You only need to make 1 of these.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay11.jpg)
You’ll also need to make 4x 30cm wires with a red spade connector on 1 end and a butt connector on the other.
![](/wp-content/uploads/smartelectrics/window/extraswitch/relay12.jpg)
Take your centre bias switch and connect 4 meters of cable to each of the outside terminals. Use a 15cm piece of cable for the centre terminal.