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How To Fix Hyper flash With LED Turn Signals. A step-by-step illustrated guide.

When you're doing an LED light conversion on your vehicle it only makes sense that your replace the turn signal bulbs with the rest of the lights. The only problem is that on most vehicles,that gives us what is known as hyper flash on turn signals.

What is hyper flash?

Hyper flash on turn signals refers to the fast turn signal flashing the occurs as a result of a burned-out bulb.

What causes hyper flash on LED turn signals?

The base problem that causes hyper flash is a safety system on your vehicle. The control module for your lighting detects any burned-out bulbs by measuring the voltage draw thru the circuit. Since LED bulbs take far less electricity to illuminate than the regular incandescent bulbs, the module thinks that the bulb is burned out even when it isn't. Since it thinks it detects a burned-out bulb, it starts flashing fast so you replace it.

How to fix hyper flash turn signals

So how do we fix a problem like this? We can't remove the safety feature on the vehicle. So how do we get our LED turn signal bulbs to work with our vehicle. Thankfully there is a solution, and we'll go over that now. First of all, you need a set of LED resistors, like the ones we sell here. Once you have those, we are ready to move on to the next steps of installing them.

First of all, you need to get access to the wiring for the turn signals. On some vehicles, that is as simple as opening the hood or the trunk. On others, you have to completely remove the headlight and taillight assembly.

Here is a picture of the rear of the headlight assembly on our vehicle we're using as an illustration. Notice the three wires that are going to the turn signal bulb. One is for the turn signal power, one for the parking light power, and the other for the ground.

So the first step after getting access to the wiring is to find out for sure which one powers the turn signal and which one is the ground. If you can't figure it out, just contact us here at LED Light Upgrade, and we'll be happy to send you a wiring diagram for your vehicle.

In this case the yellow wire is the power, and the black wire is the ground. So if you can see how we connected the resistor across the circuits - one end of the resistor on the power circuit, and the other on the ground circuit.
The next step is to connect the wires back together. Make sure to crimp them securely and put heat shrink on the wire to seal the connection as shown.
Once you have the connectors sealed with the heat shrink as shown, you are finished with this and ready to install the light assembly back into the vehicle.
When you are reinstalling the light, keep in mind that the golden part of the resistor gets hot while it is in use, so it is important to glue, tie, or screw it to a metal surface.

The only thing you have to do yet is finish installing the lights, and then repeat the process for all of the other turn signals. Once you're finished with that, you should be all set for turn signals that work great. Let us know if you have any questions, or if we can help you in any way.

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