ZERO815
Autocross Champion
- Location
- Köln Germany
- Car(s)
- 2017 GTI SE DSG
The cabin fuse box has multiple empty cavities with terminal 30 and terminal 15. For my tow hook wiring and headlight washers wiring I started looking into adding fuses w/o braking stuff or removing the dashboard. Looking at the fuse box from the backside, some of the cavities have the VW typical purple secondary locking feature. Fuses 32 - 53 don't look like they have that secondary locking feature.
You can use it, but it’s at your own risk!
First of all remove the following parts:
- Driver Side Footwell Cover. Remove 1x (MT) / 2x (AT) screws and pull footwell cover out of the bracket
- Driver Side Storage Compartment. Loosen from upper retainers and remove
In my workshop I found a rectangular steel strip with 3.8mm width and 1mm height. Used a pair of side cutters to cut it to approx 300mm. Don't deburr the cutted end. The burr will actually help you to install the terminal.
1. Select an empty fuse cavity you want to use and stick a tooth pick/zip tie, ... into the empty cavity
2. Double check the occupied side w/ a multimeter if it's a terminal 30 (Battery) or terminal 15 (Switched)
3. Double check the empty cavity from the backside (smartphone camera, mirror, or put your head under the dashboard) and make sure there's no secondary locking feature. As of today I can successfully confim that 38, 41 & 48 don't have the secondary locking feature
4. Turn off the ignition and all electrical equipment. Remove the ignition key, if equipped. Loosen (10mm wrench) and remove your battery ground cable clamp
5. Select the correct fuse terminal depending on your wire size. Strip end of wire, crimp terminal to wire. I have used N90732703 terminal. See table below
6. Check the orientation of the new terminal your going to use against the empty cavity
7. Gently push the steel strip in the same orientation through the selected empty cavity. Make sure you don't damage already installed wires
8. If you can see the steel strip in your footwell area, slide the new terminal with the crimped wire on all the way on
9. Gently pull the steel strip out of the fuse box while you push the wire into the fuse box in the same motion
10. As soon as the terminal reaches the empty cavity of the fuse box the steel strip slides out. Keep gently pushing the wire until you hear the terminal clicking. Double check by pulling at the wire that it is securely locked
11. Install battery ground cable clamp by hand on battery negative terminal and tighten the nut
- Turn on the ignition
- Window, open and close all the way. Then, with the windows closed, pull the power window switch until the relay audibly switches
- Check the window regulator convenience switch. While comfort switching is operated, window must close without holding the power window switch
- After connecting the power supply, the ASR/ESP Indicator Lamp may only go out after the vehicle has been driven a few meters
12. Insert appropriate fuse into added slot and check functionality
Reassemble interior of your vehicle.
Terminal table
Enjoy!
You can use it, but it’s at your own risk!
First of all remove the following parts:
- Driver Side Footwell Cover. Remove 1x (MT) / 2x (AT) screws and pull footwell cover out of the bracket
- Driver Side Storage Compartment. Loosen from upper retainers and remove
In my workshop I found a rectangular steel strip with 3.8mm width and 1mm height. Used a pair of side cutters to cut it to approx 300mm. Don't deburr the cutted end. The burr will actually help you to install the terminal.
1. Select an empty fuse cavity you want to use and stick a tooth pick/zip tie, ... into the empty cavity
2. Double check the occupied side w/ a multimeter if it's a terminal 30 (Battery) or terminal 15 (Switched)
3. Double check the empty cavity from the backside (smartphone camera, mirror, or put your head under the dashboard) and make sure there's no secondary locking feature. As of today I can successfully confim that 38, 41 & 48 don't have the secondary locking feature
4. Turn off the ignition and all electrical equipment. Remove the ignition key, if equipped. Loosen (10mm wrench) and remove your battery ground cable clamp
5. Select the correct fuse terminal depending on your wire size. Strip end of wire, crimp terminal to wire. I have used N90732703 terminal. See table below
6. Check the orientation of the new terminal your going to use against the empty cavity
7. Gently push the steel strip in the same orientation through the selected empty cavity. Make sure you don't damage already installed wires
8. If you can see the steel strip in your footwell area, slide the new terminal with the crimped wire on all the way on
9. Gently pull the steel strip out of the fuse box while you push the wire into the fuse box in the same motion
10. As soon as the terminal reaches the empty cavity of the fuse box the steel strip slides out. Keep gently pushing the wire until you hear the terminal clicking. Double check by pulling at the wire that it is securely locked
11. Install battery ground cable clamp by hand on battery negative terminal and tighten the nut
- Turn on the ignition
- Window, open and close all the way. Then, with the windows closed, pull the power window switch until the relay audibly switches
- Check the window regulator convenience switch. While comfort switching is operated, window must close without holding the power window switch
- After connecting the power supply, the ASR/ESP Indicator Lamp may only go out after the vehicle has been driven a few meters
12. Insert appropriate fuse into added slot and check functionality
Reassemble interior of your vehicle.
Terminal table
| Part # | Wire size [mm²] |
| 928990-1 | 0.2 - 0.35mm² |
| N90732603 | 0.5 - 1.0mm² |
| N90732703 | 1.5 - 2.5mm² |
| N90696603 | 4mm² |
| N90422102 | 6mm² |
Enjoy!
