E-bike lights
Many e-bike lights run off the main battery through a cable. Buy the light made for your model, or one rated for your system's voltage with a matching plug.
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Many e-bikes have a headlight and taillight that run off the main battery. Rad Power Bikes, for example, describes its replacement lights as connecting to the e-bike with a cable (Rad replacement lights). Others use separate rechargeable lights that don't touch the bike's wiring.
Lights wired to the e-bike are part of its electrical system. Fit the light made for your model, or one rated for your system's voltage with a matching plug, and plug it in at its connector. Don't splice into the bike's wiring, and remove the battery first.
What it's used for
A dead light is often a loose or wet plug, so check Inspect and clean connectors and E-bike got wet before you buy. Replace a light that is cracked, full of water or confirmed dead.
What to look for
- Your model. Rad sells model-specific headlights and taillights, such as separate ones for the RadRunner, RadExpand, Radster and RadWagon 5 (Rad replacement lights).
- Voltage range. Aftermarket lights list the input range they accept. Your battery's voltage must fall inside the range, and the plug must match.
- Plug and switching. A light from another system may use a different plug or need power from a port your controller doesn't have. Ask the seller before you order.
- The simple route. A good rechargeable light avoids wiring questions altogether.
Typical price
- Rad Power Bikes lists its standard headlight at $44 and its standard taillight at $29, both shown out of stock (read Nov 9, 2026) (Rad).
- Rad Power Bikes lists the RadRunner headlight at $45 (read Nov 9, 2026) (Rad).
Where to buy
- Your bike maker's parts store, such as Rad Power Bikes.
- Independent specialists in Where to buy e-bike repair parts.
- A local shop, through find a shop.
Guides that use it
Sources
Stuck after these checks? Find a shop near you.
Guides that use this
- Aventon Level.2: parts and specs
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- Rad Power Bikes RadCity 5 Plus: parts and specs
- Rad Power Bikes RadExpand 5: parts and specs
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- Rad Power Bikes RadRunner 1 and RadRunner 2: parts and specs
- Rad Power Bikes RadRunner 3 Plus: parts and specs
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- Ride1Up Core-5: parts and specs
If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.
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