Motorcycle LED Technical Blog by Custom LED

Will This Custom LED Part Fit My Motorcycle? Using the Compatibility Finder

Use the Compatibility Finder for flasher relays (make/model/year or OEM relay part number), per-product fitment lists for tail lights, and send us a photo when you are unsure.

LED Turn Signal Install Troubleshooting: Solid Fronts, No-Blink, Dead Side, Blown Fuse

GAP-C install-troubleshooting post, fact-checked against the live Custom LED store on 2026-05-31. Six-symptom structure: solid fronts, no-blink/blown-fuse, dead side, 4-way blink, brake-switch, erratic flash. All six product handles re-verified ACTIVE with featuredMedia images matching, both pages and the connector collection resolve, all three cross-link articles confirmed (4-way and load-equalizer PUBLISHED, Blinker Genie still UNPUBLISHED). Every product spec re-checked against live product bodyHtml; FMVSS 108 / SAE J588 60-120 fpm blink rate confirmed via web. CTA-box and 96px thumbnail-row markup verified verbatim against the live TB-1 article body (Article 564671479906). No off-road/legal hedges. No content changes were required; the draft passed verification as-is.

Everything You Need to Know About LED Flasher Relays for Motorcycles

When you switch to LED turn signals, your blinkers usually flash too fast. Here is what an electronic LED flasher relay does, why LEDs cause hyperflash, how to choose between a relay and a load equalizer, and which Custom LED relay fits your motorcycle.

All about LED Load Equalizers for LED Blinkers on Motorcycles

You may have heard the term "Load Equalizer" or "Load Resistor" being thrown around when looking for a solution to your fast-blink or no-blink issues on your motorcycle.  The fast blink issue occurs when you remove the OEM incandescent blinker lamps and replace them with LEDs.  

Well, understanding what a Load Equalizer is, starts by understanding why you need one in the first place.

Why do I need a Load Equalizer?

If you remove any of the OEM blinker lamps on a car, truck or motorcycle, you may find that your blinkers now blink faster than they did originally - or they stop blinking entirely!  The Fast-Blink rate is actually the designed response of the OEM flasher relay.  It's designed to blink fast when the Flasher Relay detects that a light bulb is burned out.  This way, the operator knows he has a light bulb that needs to be replaced.  

The Flasher Relay makes this burned-out-bulb determination by checking the amount of current being drawn through the Flasher Relay to power the blinker lamps.  When using LEDs blinker lamps, there is FAR less current being drawn on the blinker circuits compared to the OEM incandescent bulbs.  It is because the LEDs are so efficient that they draw such little power.

What the heck is a Load Equalizer? 

A Load Equalizer is used as a power-sink, to dissipate the same amount of power as the OEM turn signal lamps did.  

This means, if you had 25 Watt light bulbs originally on your turn signal circuit, you need to add 25 Watts worth of Load Equalization to create the same power draw on the blinker circuit as with the OEM lamps installed.

If you match the power draw properly, your Flasher Relay is tricked into thinking the bulbs are still there!  And like magic, it starts blinking normally again!

Where do I get the Correct Load Equalizer for my application?

What you need to do is find out the wattage of the OEM blinker lamps that you have removed or replaced with LEDs.  You will need to add this amount Wattage with Load Equalizers.

Custom LED makes the finest Load Equalizers for motorcycle applications.  They do not get dangerously hot like some other cheaper alternatives out there, and we have been making them since 2001!  Tried and true is the way to go.

• Use our 2 Watt Load Equalizers to replace 2 Watt light bulbs.
• Use our 10 Watt Load Equalizers to replace 10 Watt light bulbs.
• Use our 25 Watt Load Equalizers to replace 25 Watt light bulbs.
• Use our 25 Watt Heavy-Duty Load Equalizers to replace 25 Watt light bulbs on automobiles that use the same circuit for brake and turn.

What about replacing my Flasher Relay instead?

YES!  Replacing your Flasher is the best way to fix fast-blink or no-blink issues.  If we have an LED Flasher Relay that will work for your application, then forget about Load Equalizers.

By changing the OEM Flasher Relay to one that does not have a bulb-out notification, and is designed to work with very low current draw, you are taking advantage of the power-saving aspects of LED blinkers!  

Why put the large electrical load of the incandescent lamps back on your blinker system just to trick the OEM Flasher Relay, when you can just replace the OEM Flasher Relay with an Electronic LED Flasher Relay that blinks normal regardless of what blinker lamps you are using?

Custom LED makes a few different types of Electronic LED Flasher Relays for Motorcycles.  See which one is compatible with your bike on the respective product pages.

 

One mounting note for the 25 Watt Heavy Duty Load Equalizer: it uses an aluminum heat sink with integrated mounting tabs. On a shared turn-and-brake circuit, or any install that sees prolonged voltage, it can run warm, so mount it to the frame using those tabs rather than burying it in a wiring bundle. The standard 2, 10, and 25 Watt units are oversized for good heat capacity and stay cool, so they do not need special mounting.

If you have any technical questions about your particular application, please don't hesitate to contact us!

CBR 600RR Flasher Relay Replacement for LED, Years 2003, 2004, 2005, 2006

So, you may be wondering where the flasher relay is on your 2003-2006 Honda CBR 600RR.  You have changed your OEM blinker lamps to LEDs and/or installed our 2003-2006 CBR 600RR Blaster-X Tail Light on the rear, and now the blinkers blink fast, or don’t blink at all.  You know you need to replace the flasher relay, but nobody seems to have one compatible with your bike!

Worry not, Custom LED has the answer, and the solution!

The flasher relay on your bike is physically built into the gauge cluster.  “Replacing” it requires disconnecting two particular wires leading to the gauge cluster, and connecting the Custom LED ELFR-1 LED Flasher Relay to these wires.  A very useful and informative 2003-2006 CBR 600RR ELFR-1 Flasher Relay Install YouTube video clearly shows an approach that does not require any wires to be cut!

There are two specific wires leading to the gauge cluster (the gauge cluster is the device that shows speed, engine RPM and other indications) that you will need to identify for a proper installation of our ELFR-1.

• Gray wire = "blinks" +12V with the blinkers on, this is your Load wire coming from the stock relay
• White/Green stripe = ignition switched +12V power

You should check these wire functions with a volt-meter or test light before proceeding to make sure they match the functions listed above.  The motorcycle manufacturers can change wire colors slightly from year to year, and region to region.

If the wire functions match those listed above, then proceed as follows.  You will need to effectively disconnect both wires from the gauge cluster, and connect them to the ELFR-1 as follows:

• Gray wire gets attached to the BLACK wire on the ELFR-1 (attach to the wire going away from the gauge cluster, not to the gauge cluster)
• White/Green stripe connects to the RED wire on the ELFR-1 (attach to the wire going away from the gauge cluster, not to the gauge cluster)

NOTE: It is critical that you effectively disconnect these wires from the gauge cluster, otherwise the OEM relay will still control the blinkers and cause the malfunction you are experiencing to continue.

This Hard-Wire installation is somewhat tricky if you are not familiar with electronics, and for this reason we generally recommend load equalizers for the 2003-2006 CBR 600RR instead.