
THUNDERMAX Electronic Harness Controller — Turn signal
In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
We accept many payment methods

In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
The Electronic Harness Controller lets a dual-filament bulb serve as tail light, brake light and turn signal without requiring a center brake light. 🔌
This compact module combines fuse, relay and signal-canceling functions into one easy-to-install unit and includes a ribbon cable to integrate generic indicator lights. 💡
Weather-resistant connections ensure reliable performance in extreme environments, while trim-to-fit harnesses allow installation on most custom motorcycles. ✂️
Its low-profile design makes it easy to hide on a custom build and keeps wiring neat for a professional finish. 🔧
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We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
If you want to return an item, please contact us first to give you detailed instructions.