Maybe I missed something along the way but I saw a post today that referenced a CF13 LED flasher module as a plug and play rather than the 'standard' hyperflash harness.

Does anyone have any experience with the CF13 - is it really a plug and play?

 

DIY

http://www.thevettebarn.com/forums/g...flash-fix.html

 

The item from Amazon says it is for Japanese cars only. Do they make one that would work on a C5?

 

I just did this mod myself and you don't have to cut the wires. I just used taps and I don't get any hyper flash at all nor do I get it when the hazards are turned on.

I used the same exact same flasher relay that the guy in this thread used. I bought mine I think at Autozone.

https://www.corvetteforum.com/forums...ith-led-s.html

Here is the flasher that you need for this to work at Autozone.

http://www.autozone.com/electrical-a...r/6413_0_7281/

 

Awesome info! I was just about to track down a hyperflash fixer and this will save me a bit of $$$

Thank you guys!

 

Understand that type of bypass is just like the Hyperflash. If you have an issue with the Hazard internal flasher or other contacts you will NOT have the Hazard flashing function. Here is the internal Hazard design for those who might want to see it.





Here are some info I put together on this issue.

I think the normal issue is that just the contacts for the turn signal function get burned from use since they carry the current for the 2 bulbs up front and the 4 in the rear. When you turn the Hazards on they are fed from different contacts. When you cycle the Hazards ON and OFF I think it tends to help swipe the turn signal contacts which is a temporary fix.

Far left contacts are for brake lights. Next set of contacts are for the turn signals. Next are the ones for the Hazards.


OK, I see a lot of people just do not understand. First being, that a Hyperflash mod (and others) only bypasses the turn signal function of the Hazard switch. If your actual Flasher in the Hazard switch is bad you will NOT have the "hazard" function by just installing a Hyperflash. I can go on if needed. The reason so many Hazard switches fail is NOT the internal Flasher but the internal contacts that feed it for the turn signal function. A different set of contacts feed the "hazard " function. I can post the schematic for those who can read it. That is why people say when having turn signal issues to try and exercise the Hazard switch by pressing the “hazard” function, thereby helping to swipe the contacts for the turn signals. A temporary fix.
Whenever a “hard/consistent” turn signal issue sets in for either the left or right turn signals it is NOT the hazard switch but the Multifunction switch.

Here are 4 ways to fix a turn signal Hazard switch issue.

1. Remove the console and radio surround bezel and remove and replace the Hazard switch. Cost about $25 for a new switch and can be done in about 1 to 1 1/2 hours. Very easy to do, not hard or really complicated.

After removing the console and radio bezel you need to remove the radio. If you look at your replacement switch you will see the 2 green tabs on the top and bottom that lock it in place. You will be able to see the lower one when the radio is removed. Push up on the lower tab with a screwdriver while pressing in on the lower part of the switch and you can release the lower tab. Now the switch should be angled up on the end where the wiring connects. Now take a large flat bladed screw driver and place it at the top of the switch. Give the screwdriver a swift rap with a hammer. DON’T overdo it, just a reasonable hard hit and the switch will just pop out.

How to remove the console and bezel for access to the radio:

http://www.vetteessentials.com/instr...zel_howto.html

If you have a manual transmission you can totally remove the radio bezel very easily to allow better access. No need to remove the shifter ****. Just pop the shifter boot loose and rotate it and it will allow you to lift the bezel up and over the shift boot and shifter ****.

2. Buy a Hyperflash unit for about $65 and install it under the dash. Just requires removing the Knee bolster. About a 1/2 hour job.

3. Buy a used wiring harness that goes from the steering column to the hazard switch. Remove the knee bolster and unplug the existing one and install the replacement. Then install the new Hazard switch on the other end and just place it under the ignition switch where you can access it if you ever need Hazards. Dash will look stock since the old bad switch is still there. Cost is 25$ for switch and about 25$ for used harness. Takes the same time as installing a Hyperflash unit.

Here is info on the wiring harness:

GM P/N 12163776

http://www.corvetterecycling.com/product-p/233776.htm


4. Lastly, this is what I did. A relocation similar to #3 but I used the process in #1 to move the existing wiring harness to beneath the ignition switch where I placed a new Hazard switch. I then reinstalled the old Hazard switch in the dash for a stock appearance.

Here is a link for relocation:
http://forums.corvetteforum.com/c5-t...elocation.html

 

I just installed 2 pin relay like described in the vettebarn forum. Just clip the pink and purple wires and crimp connectors on the side further from the hazzard light switch. The relay is sensitive to feed and output. I discovered this because I connected them backwards. Light comes on but no flash. Just switch connections and all is well. Two pin relay was purchased at SpedwayMotors.com for $13 dollars.

 

This forum is soo awesome for stuff like this. Just wondering, any of you that have done this...did you do LEDs for the front turns as well as the rear tails and this fixed your hyper flash? I wonder if this would work with the switchbacks that some vendors sell as well.

 

The relay that I bought claims its rated for 6 lights. I only used it for my 4 tail lights and it worked fine. I forgot to mention that in my original post that this solution cost about 1/3 of the bypass harness.

 

I just finished installing the hyper-flash circuit from Radio Innovations. It's really easy to do and you don't need to cut any wires.

Essentially, you need to remove the knee knocker piece from from the lower dashboard on the drivers side. Underneath the ignition switch there is a wire bundle with a multi wire connector. Disconnect the wires from each other and plug in the resistor circuit, push all the wires back into the dash and reattach the lower dash. Then, . . . you're done. Be sure to check the success of your job before you put the dash back together.

I tried to figure out where the CF-13 relay was suppose to go and never did figure it out. That's the biggest reason I decided to go with RI's fix.

Previously this year I had to replace the E-flasher which required pulling the E-flasher switch. Again, Youtube proved to be the easier way for me.

Now, my stock headlights look so dreary that I need to update them. I'm beginning to wonder if I'm going down the trail where it will never end.

 

Just for reference for anyone trying to figure out how the multifunction turn signal leaver circuit works: I believe there's a bug in the diagram from the (Hayes, I'm guessing?) book above.

Trying to follow the signal when turning right or left, the leftmost contact causes the brake and flasher signals to be connected, which clearly isn't right?

The diagram posted in this thread looks correct:
https://www.corvetteforum.com/forums...ights-out.html

Based on that, I've made the correction to "this" diagram as I believe it should be. If anyone disagrees, please post so we get the most correct information out there.

 

The bypass harness was only $35, it was the cheapest and easiest "mods" I've done to my car.

 

That's a win-win!