Sale

Exterior Components Lights and Components

RetroBright

Adapter H4 Non-Standard Plug Pin-Out Swap Vehicles With Non-Standard 3 Prong Headlight Plugs or That Require a Pin Out Swap Premium RetroBright

$13.06 $10.86 Save $2.20

SKU: R07V H820

In Stock
In Stock
Ships by Aug 5
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

Part #: H820

If you don't feel comfortable cutting up your factory wiring or don't want to attempt to swap pins on your headlight plugs, Holley RetroBright adapters make it a plug-and-play affair. If the standard H4 male plug used on Holley RetroBright Headlights will not fit your female socket or you need to swap pins around to match up properly, these harnesses will make the job quick and easy.Features and Benefits:Allows Holley RetroBright Headlights to connect to any non-standard H4 Sockets or those that require a pin swap Eliminates the need to cut factory wiring Can be used to replace old and brittle factory sockets Easy to follow guide on common non-standard wiring conversionsAssociated Comments:The male plug (RBEC120) is also included and must be assembled once the proper pinout of the vehicle is determined. Simply slide the terminals in with the small pin facing inward and tug gently to ensure it has seated.If it pulls back out, use a small screwdriver or stiff metal object to push it outward just a fraction of an inch more until it seats in the male connector. See image 5.Details:Connector: H4Connector Gender: Male FemaleConnector Quantity: 2.0Emission Code: 6Material: CeramicQty: 2.0Terminal Gender: Male FemaleTerminal Type: PinWire Quantity: 3.0

Headlight Wiring Harness - RetroBright - H4 Connector - Ceramic - Kit

MIA's Description

The Holley RetroBright H820 is a headlight wiring harness designed for vehicles with non-standard H4 headlight plugs or those requiring a pin-out swap. It allows Holley RetroBright Headlights to connect without modifying factory wiring.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRetroBright
Part NumberR07V H820

Buy with Confidence

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.

View Full Return Policy