I was just trying to help.

The front OEM bulbs you want to replace have two filaments:

• One for the DRL/Turn Signal
• One for the Parking Light

That's why Lionelhutz pointed out that the DRL uses the same circuit than the Turn Signal.

As he said, to do what you want you need an additional harness.

 

OK, first off DRL means daytime running light. Many people think the DRL is the corner light bulb. But, the corner light bulb is MULTI FUNCTION and the DRL is only 1 OF 3 functions of that bulb. It is not a DRL if you lights are on and it is not a DRL if the signal is on. This seems to create a lot of confusion with people not understanding the difference between DRL, signal and running light functions.


Yes, you are missing something. The DRL on a C5 use the signal filament of the bulb, not the running light filament of the bulb. When you power the switchback on the signal power pin it lights yellow. So, any yellow/white switchback bulb installed in a C5 will illuminate yellow during the day when the DRL's are on. It will also be white with the lights on and flash yellow with the signal on. The Type 2 switchbacks are the ones that flash yellow only with the white off. Otherwise without specifying Type 2 they will likely flash alternating between yellow and white.

Radioflyer sells a harness to make the DRL appear white. It has NOTHING to do with the hyperflash harness or the need for resistors. I have no idea if you can get this type of harness anywhere else, but it probably is sold by multiple sources. It's a little timer circuit. Basically, if the signal/DRL lead doesn't cycle on and off for a certain length of time then the power must be for the DRL function so make the switchback illuminate white by powering the running light pin instead of the signal light pin on the bulb.

GCG posted good links, but the pricing is rather high when you can find them cheaper in other places. His one post pointed out how the dual color LED can be found cheaper from other sources then a Corvette specific vendor. Both links point to lights that function the exact same way.


You go on about needing a harness to make a switchback work which is complete crap when the car has a flasher bypass harness. You don't need any other harness or resistors front or back to make LED bulbs work when the car has a flasher bypass harness.

However, if you want the DRL to be white then you do need a special harness. The OP originally said nothing about how he wanted his lights to illuminate so for all I knew he already understood how switchbacks worked on a C5. Maybe you should learn to explain what the hell you're talking about to avoid confusion. Overall, it sounds like you don't fully understand what parts do what and how the pieces all work together.

 

I have what he is talking about on my C6. White DRL, Amber turn and it requires the harness from Radio Flyer, no matter what you have anywhere else! Don,t like it, STFU.

 

You do know that this is the C5 Tech forum and that a C6 isn't a C5?

To put switchbacks in a C6 you must use a load resistor or harness for each bulb. Not so with a C5.

 

This was originally posted under NEW POSTS. OK

 

What's your point? New Posts lists the forum each post is under...

 

I,m done with you.

 

Thanks lionelhutz,

Got it. Now I understand the need for the Radioflyer harness. DRL uses turn signal filament not parking light filament. I assumed it used the same filament as the parking light and the other filament was the turn signal. I guess that was too logical for GM.
Think, I'll forget the whole thing. Not worth it to me.

Thanks everyone for the help,

Phil

 

This spring, I did a complete LED conversion on my KIA SUV. Installed a LED compatible flasher relay under the dash, and it all worked perfectly.

I've been lot confused about how such a conversion would work on my 99 C5. I am installing a Hyperfash harness this afternoon.

Here is the plan:

Replace the 194 internal bulbs (not affected by any Hyperflash harness) with 194 LEDs.
Will replace the 3057 tail light bulbs with 3057 LEDs (these will be affected by the harness)
Will also replace the 4157NA front parking and turn signal bulbs with 4157NA LEDs (also affected by the harness). Others include replacing Plate lights, backup lights, map lights, side markers, etc. (These will not rely on the Hyperflasher harness).

With the installation of the Hyperflasher harness, will I still need resisters for any bulbs? If so, where?

 

With a hyperflash harness you are good. No need for resistors to prevent turn signal hyperflashing if a harness is already installed

 

Jeeze, I bought 2 LED brake lights at Walmart, thinking I'd like brighter brake/tail lights, and knowing they would not blow out. But, then was told they don't work with a conventional flasher. What's the easiest way to get LED brake lights in? I don't care about changing colors.

 

IMO the best look is to purchase Eagle Eye brand LED Brake Lights. Around $250.00 on flea bay. Not sure if they make them for a C5.

 

hyperflash harness

Only mentioned dozens of times in this thread.....

 

Maybe you need to chill out. Not everybody is as smart as you think you are.

 

You shouldn't hold grudges over a simple technicality. I'll bet you guys would be friends if you met at a car show. You were both right but for different model years.

Yaw did clear up some confusion for me though (if any good came out of it).

 

I've owned a Corvette for a week and a day as of today. So, sorry if I am asking stupid questions. Anyway, I installed the Hyper flasher relay this afternoon. The install went well once I figured out how to remove the knee bolster. Also replaced my internal bulbs, backup, and plate bulbs with LEDs. Waiting for the turn signal bulbs to arrive.

 

Yes you are probably right. I will throw out the peace pipe to Lionelhutz. Have a great life and don't forget to wave!

 

Not for anyone who can't be bothered to read. It was posted a number of times in the thread and also in the post directly above his post.

 

Walmart sells automotive LED bulbs. Did not know that. How good was the selection of bulb types?

 

I am still completely (well... somewhat) confused about the function of switch back LEDs in the front turn signal housing. Bear with my question, please. A switch back (lets say white/amber) is going function in 3 states. Those would be Off, White, or Amber. Right?

So, with the engine running, what is the default state of the switch back 4157NA LED bulb in the front turn signal housing?

Please excuse the seemingly stupid question. I am trying to understand this.