How to Install Undercar LED Lighting | YourMechanic Advice

How to Install Undercar LED Lighting

Undercar lighting can make any car look cool. It adds a futuristic feel to your vehicle, making it look like something out of a sci-fi movie. Undercar LED comes in all kinds of different colors and installation is something you can do on your own. While it may seem difficult, the overall concept is simple and, with a little patience and effort, it is a welcome addition to your car.

Part 1 of 1: Install the LED lighting

Materials Needed

attaching LEDs with zip ties

Step 1: Attach the LEDs to the vehicle. Set the LED strip under your vehicle.

Look for a means of attaching it, such as bolts or brackets, and temporarily mount the strip using LED tape. Use zip ties to permanently secure the LED strip to your vehicle. The zip ties should generally be placed every foot or so under the vehicle.

mounting the module in the engine bay

Step 2: Route the wires into the engine bay. Route the wires under the vehicle and into the engine bay.

Step 3: Connect the wires to the module. Place the module in the engine bay and connect the wires to it.

wiring schematic from battery to module box

Step 4: Connect the module wires to power. Connect the module power wire to the battery positive terminal using the kit supplied hardware.

Step 5: Connect the module wires to ground. Connect the ground wires to chassis ground.

Make sure the ground contact point is clean and free of rust and/or paint.

mounting the module box

Step 6: Mount the module box. Permanently mount the module box somewhere in the engine bay that is cool, dry and clean.

Extend the antenna on the module so it will get reception even with the hood closed.

mounting the switch

Step 7: Mount the switch. If your kit does not use a wireless module you will have to use a switch to control it.

Start by drilling a hole and mounting the switch. Choose a location that is easily within reach.

running wires through passenger compartment

Step 8: Run the LED wires into the passenger compartment. Run LED wiring from the engine compartment into the vehicle interior.

To do this you will have to pass through the firewall. The easiest way to do this is to find a grommet already in the firewall and puncture a hole in it to run the wires.

Step 9: Connect the switch to power. This can be done using a fuse tap.

Step 10: Connect the LED kit wiring to ground. Connect LED kit wiring to chassis ground. Make sure the ground contact point is clean and free of rust and/or paint.

undercar lighting illuminated

Step 11: Test the system to make sure it works. The lights should illuminate and be easily visible.

Nothing transforms a vehicle more than underglow. Now your car will attract attention everywhere you go, and when people ask where you had the work done, you can say you did it yourself. If your battery begins to act unusually or the light comes on, have one of YourMechanic’s professionals take a look.


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TJ

25 years of experience
362 reviews
TJ
25 years of experience
Volkswagen Routan - Battery Light is on - Rotonda West, Florida
TJ text to say he was on his way and arrived slightly before the appointment time, he is very knowledgeable and professional and provided an excellent service. I would have no hesitation in recommending TJ to friends and family
Chrysler 300M - Battery Light is on - Bokeelia, Florida
Professional and very friendly. Know exactly what is wrong with my car. I book him to come again on Thursday and fixed my car. I will reccommend him.

Theodore

15 years of experience
1217 reviews
Theodore
15 years of experience
Mazda Tribute - Battery Light is on - Lynnwood, Washington
I was very pleased with Theodore's work. He obviously knows what he is doing and even goes above and beyond what is expected. He also was very patient with my lack of knowledge and treated me with respect. I expect to have him do more work on my vehicles.

Dia

31 years of experience
78 reviews
Dia
31 years of experience
Ford Explorer - Battery Light is on - Decatur, Georgia
Did showed up about 15 minutes early and patiently listened to me explain exactly what was going on with my car. He went thru his check and had an answer for me in 20 minutes. Very knowledgeable and shot me straight about my vehicle. Id definitely use him again.

Joaquin

4 years of experience
161 reviews
Joaquin
4 years of experience
Toyota 4Runner - Battery Light is on - Mesquite, Texas
Joaquinn was great in explaining how it all works and diagnosing that the alternator was not the issue but that the issue appeared to be the corroded battery connector. He tested both the battery and alternator and both were good. He recommended cleaning the battery heads and said that this could be the fix or it could be something else. Suggested we start here. Very pleased.

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