The 2017-2021 Jeep Grand Cherokee (WK2) came with either factory halogen or factory HID headlights, depending on trim and package. Many halogen owners upgrade to aftermarket HID style headlight assemblies for a newer look and projector lighting.
The common question: can you install aftermarket HID style headlights on a 2017-2021 Grand Cherokee that came with halogen headlights?
Yes. But swapping the headlights alone is not enough. The factory halogen wiring does not match the HID style headlight setup. A headlight conversion harness adapts the factory wiring so the new headlights work without cutting or splicing.
HEADLIGHTS NOT INCLUDED. The KVS kit is the wiring harness pair only.
Quick Answer
- Fits: 2017-2021 Jeep Grand Cherokee with factory halogen headlights.
- Converts to: compatible aftermarket HID style headlight assemblies.
- Tested with: aftermarket HID style headlights only. It has not been tested with OEM factory HID headlights.
- What you need: the aftermarket HID style headlights plus the 2017-2021 Jeep Grand Cherokee Halogen to Aftermarket HID Style Headlight Conversion Harness.
- Install: plug and play. No cutting or splicing. The resistors mount to a metal surface.
- Not for: vehicles that came with factory HID headlights.
Not sure which headlights your Jeep has? Read How to Tell What Type of Headlights Your Vehicle Has.
Planning to Use OEM HID Headlights?
This harness is only confirmed to work with aftermarket HID style headlights. It has not been tested with OEM factory HID headlight assemblies. If you plan to install OEM HID headlights, contact us to confirm fitment before you order.
Why Aren't HID Style Headlights Plug and Play?
The HID style headlights bolt onto the vehicle, but the wiring is different. Factory halogen and HID setups use different wiring layouts and electrical requirements. Without a conversion harness, the HID style headlights will not work correctly on the factory halogen wiring.
For more on why this happens, see Do I Need a Headlight Conversion Harness?
What the Conversion Harness Does
The harness adapts the factory halogen wiring to the aftermarket HID style headlight setup. On compatible aftermarket HID style headlights, it allows proper operation of:
- Low beams
- High beams
- Daytime running lights (DRLs)
- Turn signals
It plugs into the factory connectors, so there is no cutting or splicing. The install is fully reversible with no permanent wiring changes.
Integrated Load Resistors
The harness comes with pre-assembled resistors. They help prevent bulb-out warnings and lighting errors after the conversion.
The resistors get hot during use, so mount them correctly:
- Mount them to a metal surface with a screw or bolt
- Do not mount them to plastic
- Do not mount them to wiring
Standard or Premium Resistors
The standard configuration includes everything needed. A Premium Aluminum Load Resistors option is also available if you prefer aluminum resistor hardware.
Installation Overview
- Remove the factory halogen headlight assemblies.
- Connect the conversion harness to the vehicle side connector.
- Connect the aftermarket HID style headlights to the harness.
- Mount the resistor to a metal surface with a screw or bolt.
- Secure the wiring and reinstall the headlights.
- Test all lighting functions before final installation.
No programming or extra wiring is required.
What This Harness Fits
- 2017 Jeep Grand Cherokee
- 2018 Jeep Grand Cherokee
- 2019 Jeep Grand Cherokee
- 2020 Jeep Grand Cherokee
- 2021 Jeep Grand Cherokee
The vehicle must have factory halogen headlights and be converting to compatible aftermarket HID style headlights.
It is not compatible with:
- Vehicles that came with factory HID headlights
- OEM factory HID headlights, unless fitment is confirmed with us before purchase
- Aftermarket headlights with different wiring or pin layouts
- Other headlight styles not listed in the product description
Before You Buy
- Your vehicle is a 2017-2021 Jeep Grand Cherokee
- It came with factory halogen headlights
- You are installing aftermarket HID style headlights
- You have a metal surface to mount the resistors
Questions about fitment? Contact us before you order. You can also browse all Jeep Grand Cherokee parts, or see the 2014-2016 Grand Cherokee guide if you have a different model year.
Frequently Asked Questions
Do I need to cut or splice any wires?
No. The harness plugs into the factory connectors.
Does it work with OEM HID headlights?
It has not been tested with OEM factory HID headlight assemblies. It is only confirmed with aftermarket HID style headlights. Contact us before ordering for OEM HID headlights.
What lighting functions work?
On compatible aftermarket HID style headlights: low beams, high beams, DRLs and turn signals.
Do I have to mount the resistors?
Yes. Mount them to a metal surface with a screw or bolt so they can shed heat. Do not mount them to plastic or wiring.
Will this work if my Jeep already has factory HID headlights?
No. This harness is only for models that came with factory halogen headlights.
Are the headlights included?
No. HEADLIGHTS NOT INCLUDED. The kit includes one left side and one right side conversion harness with pre-assembled resistors and connectors.
Final Thoughts
If your 2017-2021 Grand Cherokee came with halogen headlights and you want aftermarket HID style headlights, you need a harness to adapt the wiring. This one plugs in, keeps the factory wiring intact and is confirmed with aftermarket HID style headlights.
Get the 2017-2021 Jeep Grand Cherokee Halogen to Aftermarket HID Style Headlight Conversion Harness. HEADLIGHTS NOT INCLUDED.
