Blog Home
Rain – Rust – Refined
August 21, 2018

Rain – Rust – Refined

Custom Dynamics® is the authority on after-market motorcycle LED lighting  When we see an opportunity to fix a common problem, we do! Any Harley-Davidson® owner can tell you, water in your turn signal is an issue. The problem comes from the small gaps between the housing and the OEM lens. Especially when you wash your bike or get caught in the rain, water pools up in the housing. More often than not, the moisture leads to serious issues and expensive repairs. There are many schools of thought on solving this dilemma. Some choose to drill a small hole in the factory lens. Others prefer to wrap the seam in a chrome detailing tape. There wasn’t an ideal fix, until now. Our new ProBEAM® Motorcycle LED turn signals lights offer a simpler solution. With various upcoming product improvements we can keep the water out and your investment dry!

Corrosion is an electrochemical reaction that appears in several forms, such as chemical corrosion and atmospheric corrosion, the latter of which is the most common form. When acidic substances (including water) come in contact with metals, such as iron and/or steel, rust begins to form.  -CSL Silicones Inc.

Harley, We’ve got a Problem

Excess moisture or pooling water in the turn signal housing will cause extensive damage over time. The photos below show how much corrosion can build up over time. This customer contacted Custom Dynamics® after one of his Genesis® LED turn signals had stopped illuminating. As you can see in the photo on the left, the inside of the turn signal socket was completely corroded. The power contacts and ground tab were both damaged beyond repair. In the photo on the right, you can see the corrosion inside the socket had even begun to eat away at the turn signal base.

If the corrosion is mild, a flat head screwdriver can often scrape it away. The use of recommended cleaning agents can also work. But, in this instance, the damage was already done. Despite our efforts, replacing the OEM turn signal housing and socket was necessary. Plus, the bulb base on the LED turn signal cluster required a replacement. Purchasing replacements became necessary to get the bike back to normal operation.

Refined Design: ProBEAM®

Custom Dynamics® assessed these issues and designed a fix. Our new line of ProBEAM® Motorcycle LED Turn Signals Lights will soon implement a design unlike any other on the market today. ProBEAM® LED Turn Signal Lenses will begin to transition to the new design that includes a gasket which is either built-in or provided, depending on the lens style.

Testing performed on the gaskets ensures a water-tight seal (see video here). This proven design prevents water and moisture from entering the turn signal housing. In turn, the gasket will keep all components dry and free of corrosion!

Bullet Style ProBEAM® Turn Signal Lens

  • ProBEAM® LED Turn Signal Submerged in WaterProBEAM® LED Turn Signal Submerged in Water

The drawing below illustrates the new Bullet Style ProBEAM® LED Motorcycle turn signal lens. You can also see the built-in rubber gasket. This rubber gasket sits snug between the housing and the lens, providing a complete 360˚ seal. Bullet Bezel ProBEAM® Motorcycle LED turn signals will also provide a built-in rubber gasket to ensure a water-tight seal.

Engineering drawing illustrating ProBEAM® lens
Engineered Drawing of Bullet Style ProBEAM® Turn Signal Lens

Flat Style ProBEAM® Turn Signal Lens

The design of the Flat style ProBEAM® LED Motorcycle turn signal lenses is similar. These lenses come with a provided rubber o-ring. Like the built in gasket, the o-ring sits on the lip of the lens to provide the same water-tight seal when installed. These lenses also include two smaller rubber washers. These washers install with the mounting screws to secure the lens to the turn signal housing. Flat Bezel style ProBEAM® Motorcycle LED turn signal inserts also include an o-ring. This o-ring sits on the outer edge of the lens when installing, also providing a water-tight seal.

The installation instructions note LED turn signals do not need any dielectric grease. Before installing LED turn signals, Custom Dynamics® recommends cleaning the turn signal sockets. This ensures the housing is free of any moisture that could cause corrosion or damage to the turn signal or factory housing.

The new ProBEAM® LED turn signals and lenses have already gained popularity among riders (see how the design and performance of ProBEAM® LED Motorcycle turn signals measure up against the competition). Custom Dynamics® team of engineers considered every detail in the design of the ProBEAM® LED Motorcycle Lighting product line. This includes resolving the most common annoyance of water, and the damage it can cause over time. By implementing the unique gasket design, we will provide a water-tight seal. In turn, this keeps your bike and turn signals looking the same as it did rolling off the show room floor – dare we say even a little better!


  1. Gustavo on 12.27.2021 at 2:21 pm

    Why does the screw driver tab need to be at th 6 o’clock position ?
    Common sense tells me to place at 3 o’clock for clutch side and 9 o’clock for throttle side in order for screw driver to work easily and for viewing of work being performed

    • Karen on 12.27.2021 at 4:22 pm

      Gustavo, the positions you have noted would also be sufficient. It is most important during installation to ensure the LED cluster and lens are fully seated and the lens tabs are locked in so there are no gaps between the housing and the lens.

  2. Kevin on 11.26.2019 at 8:23 pm

    Sadly the gaskets are not helping with my Pro Beam Dynamic Rings, as water still is penetrating into the turn signal housing…..

    Any ideas CD??

    • Erin Armitage on 11.27.2019 at 10:08 am

      Hi Kevin!

      I’m very sorry to hear you’re having issues with the ProBEAM® Dynamic Ringz™! We’d be happy to help troubleshoot the issue with you if you’re interested! I can have a technician reach out to you via email and have also included some installation details to confirm/try, below!

      First, be sure to push the reflector inside the turn signal housing all of the way back into the housing. You can use a flathead screwdriver to push back the O-ring around the reflector, too (some customers have had luck just simply pushing back equally on the reflector with both thumbs, others have had to use a large flathead and some have even reported the need to trim the turn signal reflector O-ring/gasket with a razor blade because it had aged and dried out and would not allow movement.) Be sure to install the lens with the screwdriver slot facing downward at the 6 o’clock position and make sure it’s fully seated and tabs are locked in. If that is the case, you should see no gap between the housing and the lens (we’d encourage you to do a visual inspection of the lens once it’s installed to ensure there are no gaps between the lens and the turn signal housing).

      Just let us know if you have any questions and/or if you’re interested in a technician following up with you via email. I look forward to hearing from you soon!

  3. Matt Brandt on 09.07.2018 at 1:54 am

    That would be great. Thank you

    • Erin Armitage on 09.07.2018 at 1:24 pm

      Yes sir, no problem at all! As soon as our new ProBEAM® lenses (with the built-in lens gasket) are available, we’ll let you know! Thank you again for choosing Custom Dynamics®; have a wonderful weekend and ride safe!

  4. Matt Brandt on 09.05.2018 at 1:51 am

    Will you be offering just the lenses? I just bought a set of ProBeam turn signals 3 weeks ago.

    • Erin Armitage on 09.05.2018 at 4:58 pm

      Hi Matt!

      Thank you for your recent purchase of our ProBEAM® Amber/White Dynamic Ringz™! The new ProBEAM® lenses (with the built-in lens gasket) will be available for purchase in the near future and will be available separately from the ProBEAM® LED Dynamic Ringz™! We will add you to our product request list, that way once they are available, we can let you know!

Leave a Comment
Want your image to appear next to your comment? Get a gravatar!

Leave a Reply

Your email address will not be published. Required fields are marked *

More Recent Posts
May 20, 2024

Turn heads and stay safe as you take your Side-by-Side (SxS) or UTV from the trails to the streets with CD Off Road’s Street Legal Lighting Solutions. Our latest lineup is not only designed to enhance your off-road experience, but also to ensure you’re compliant and ready for the streets. STREET LEGAL KITS Transform your […]

February 15, 2024

Dealers at the Louisville NVP likely had a tough time missing the performance motorcycle headlight from Custom Dynamics®. The super-bright, highly stylized Shark Demon™ Performance LED Headlight for Road Glides made its debut in Louisville. Therefore, the Custom Dynamics® booth was a popular spot throughout the entire weekend. Now, riders can order this DOT-compliant performance […]