Holley
HARNESS SWITCHED GROUND
SKU: H00E H840
Description
Part #: H840
Many Toyota vehicles will have a switched ground that doesn't allow the RetroBright headlights to work right out of the box. This harness is designed to switch the ground back and then the RetroBright headlights can be plugged into this harness. We wanted to expand the great RetroBright experience to the switched-ground vehicles so more people can enjoy the safety and beauty of RetroBright LED lighting.
Features:
- Allows Holley Retrobright Headlights To Connect To Most Toyota Vehicles With The Switched Ground
- Allows Holley RetroBright Headlights to connect to most Toyota vehicles with the switched ground
- Designed So The Installation Is Easy And Effective
- Designed so the installation is easy and effective
- No Special Cutting Or Major Reconfiguration Of Factory Wiring
- No special cutting or major reconfiguration of factory wiring
Designed for vehicles with switched ground application (typically older Toyotas)
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
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Specifications
| Brand | Holley |
| Part Number | H00E H840 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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