BHPian SulemanP recently shared this with other fans.
This may be an ordinary DIY, specifically for after-sales fog lamp installation not provided by OEM. I searched a lot in Team-BHP, but I didn't come across a thread specifically for any variant of Tata Tiago. Therefore, a new thread.
The car I bought in 2019 is still under warranty. I don’t know that Tata will not provide me with two important things in the car: 1) fog lights and 2) automatic/manual IRVM, which is very useful when driving at night . I have read a lot about DIY on this forum, especially the topics from @Reinhard and @leoshashi, just to name a few...These really helped me gather a lot of information to continue.
I am a little confused about what I should do because 1) This car does not have fog lights pre-installed, so there is no wire that I can use. 2) I am not used to plugging in the car firewall and installing a switch in it. 3) I don't approve of using the headlight switch to operate the fog lights, so I won't have a separate fog light switch.
After thinking about it for a long time... I decided to control it independently and need to install a separate switch, so piercing the car's firewall is the only option. Although @Reinhard uses the Bluetooth method to control the fog lights, I gave up this idea... If you install a dedicated fog light circuit and control device, warranty related issues will not be affected.
Let's do the DIY project quickly, and it will be done step by step for clarity.
Materials used for DIY.
Most of them know what tools are needed for DIY projects, you can find more information here. Before we start DIY, you really need to know whether your car is a positive switch or a negative switch, which will help you understand how to proceed and complete the wiring safely. If your car comes from the Premium market segment, you must do this. In this case, the wiring may be monitored by a computer or special modules, which may throw some error signals later.
Engine compartment before installation of wiring:
Step 1-Install the push/pull switch in the cabin-Pull the panel under the steering wheel from the LHS towards you. This is easier to remove. You need a little force to unlock the panel, and then continue with the RHS here. You must also apply a little force to the panel Pull towards you and it will unlock.
I have installed the switch on the LHS as shown in the picture below:
Panel with switch installed:
The scene behind the panel had to make a small hole in the firewall food to allow the wires to pass through. In this way, we completed the work inside the cabin:
I stupidly followed a Youtuber and installed the switch in this place...I should admit that this is not a good place to install the switch. Anyway, I will change places soon.
Step 2-Modify the H4 wiring kit to power the fog lights. Here you will find 2 circuits, one for the low beam and the other for the high beam. Since we use this kit to power the fog lights, I need any circuit, and after putting insulating tape on the end, you can put the remaining circuits away. Cut the two H4 connectors of the wiring kit and solder the H11 connector that comes with the fog lamp.
Please make sure there are two things here, always make a direct head to combine the wires. The joints should not be parallel to each other/the same length. When you bring the joints closer, they should get closer one by one, please refer to the image for reference.
Step 3-Open the engine cover and use the modified H4 wiring kit to complete the wiring part. Make sure that the wiring does not come into contact with any moving parts and heated surfaces, as this may cause the wire insulation to melt and ground the circuit. Use cable ties (where feasible) to secure the wiring and use wire/nut bolts to secure the ballast.
Engine compartment after completing the wiring part:
Step 4-Remove the front bumper used to install the fog lamp and ballast
The ballast is installed on the RHS vertical member of the chassis using 3M tape and wrought iron wire to achieve better weight management, because I don’t believe that only 3M tape and cable ties are used to fix the ballast:
After a period of time, the tape and cable tie will fall off, allowing the ballast to hang freely:
Repeat the same operation on LHS.
Step 5-Install the projector on the front bumper fog lamp cover. TATA Tiago bumpers do not provide nuts and bolts suitable for the fog lamp body. TATA provides a simple flat head screw and locking system to install the fog lamp body. In my case, they provided a blank board in the fog lamp housing, so you need to cut this blank board to fix it around the projector body. After cutting this board, it will become a ring suitable for the lamp body.
I have been doing DIY for 2 weeks because I can only have free time on Sundays. Therefore, even when writing this thread, I have not yet solved the alignment problem after installation. After finishing the alignment part, I will post other images.
When doing such a DIY, I hope you check and recheck a few things, they are as follows:
After the alignment is complete, I will post the remaining images.
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