Hyper-flashing, also known as rapid flash or hyper flash, it’s the most common phenomenon that occurs when you change your turn signals to LED lights. Since LED turn signal bulbs draw much less power than the original factory bulbs, this will cause a sudden drop in the circuit’s resistance causing the hyper-flash or rapid blinking of the turn signals. This type of event also occurs when you have a turn signal bulb blown or not working since that also causes a drop in resistance in the circuit. This lens will show you four ways to tackle this problem once and for all.
1) The first solution is also the most common out of all four and will be a sure-fix to the hyper-flashing issue. Load resistors are resistors that are put between the positive wire and negative wire of the LED turn signal wiring, bridging the two wires together raising the load (hence load resistors) for the entire circuit. The specifications for most load resistors have 50W capacity with a 6 ohm resistance. Although these will fix the issue for nearly 100% of cases, the requirement of tapping wires discourages some people from purchasing these. Along with the wire tapping, these also get very hot once they are operating due to the electrical resistance created within the resistor so these must be mounted to a metal surface.
2) The next solution is a plug and play (PnP) load resistor harness. In theory, it is the same exact design as the load resistors previously mentioned, however, these are pre-wired to a specific socket size such as 3157, 7443, 1156, and more. Since the load resistors are pre-wired, they can be easily installed without needing to tap any wires. These are perfect for those who want a PnP style solution to their hyper-flashing woes. Unfortunately, the only downside is that the socket plugs are universally designed and may not fit all housings. In addition to that, most of these are designed using a 3 ohm resistor instead since they will be in direct proximity to the pre-wired wires to prevent overheating and melting. Mounting to metal is still required.
3) The third solution is a thermal flasher relay. Most vehicles come equipped with a relay that coordinates the flashing speed of the turn signals. These factory flasher relays are designed to operate using a regular incandescent filament bulb, not an LED bulb that has a lower power draw. To fix this, aftermarket thermal flasher relays are designed to operate with aftermarket LED replacement bulbs. The flasher relay does not get hot and is a PnP solution. The only downside with this fix is that some of the newer vehicles do not use a flasher relay to coordinate the LED corner lights, instead it uses the vehicle’s ECU (Electronic Control Unit). This brings us to our last solution to the hyper-flashing issue…
4) Many European vehicles and some newer vehicles have the ECU to control the flashing of the blinker lights. In addition to controlling it, European vehicles also have a system that monitors the draw and resistance of the exterior bulbs and warns the driver when they are not functioning. These are known as fault or error messages and can be quite annoying. To alleviate this, some vehicles have the ability to change the resistance and draw requirements of the turn signal circuit to use an LED turn signal using aftermarket car computer software. This not only gets rid of the error message, but it also fixes the hyper-flashing issue at the same time. As with all these fixes, there will be a “pro” and there will be a “con” to each solution; the con for this is that this type of fix may not be available for all vehicles.
All in all, having the choice of four distinct hyper-flash fixes will allow the user to choose what is best for their vehicle. While one solution may not work for the vehicle, another solution may work it instead. While these fixes are not rocket science and is not difficult to accomplish, these all require some type of electrical knowledge of the vehicle, it is still recommended that only a professional with experience install these fixes.