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DRL/Bulb Technical Question

Discussion in 'Gen 3 Prius Accessories and Modifications' started by Paul58, Nov 9, 2010.

  1. Paul58

    Paul58 Mileage Miser

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    I've done the WebElectronicproducts DRL Mod and swapped out the OEM 7440 Bulbs for some LEDs, but I'm not 100% happy with this setup.

    I have a couple concerns and a couple questions I hope you folks can help me with...

    1. Hyper Flashing and a replacement relay: I've ordered this relay to stop the hyper flashing I'm experiencing with the LED Turn signal bulbs, but I have no idea where this relay is located or how to access it.
    a. Does anyone have any pictures or can explain where it's located and how to access it? I know it's somewhere under the dash, because I can here the clicking, but I'm wondering how deeply I have to dig under the dash to find it and replace it?
    b. Will this flasher work with the OEM standard 7440 bulbs?​

    2. The LEDs are not as bright as the OEM Standard 7440 bulbs, but I wanted LEDs because they run cooler. Related to Brightness:
    a. I purchased these LEDs in the hopes they are brighter than the ones I have. Does anyone have any experience with these LEDs? Are they as bright as the OEM Bulbs?​
    Related to heat:
    a. Will the OEM Bulbs run too hot and melt the turn signal housing if there are used as the DRLs?​

    Being as DRLs are intended to make you be seen during daylight hours, the OEM 7440 Amber Bulbs are really brighter than the LEDs I currently have installed. I want the visibility of the OEM Bulbs, but I don't want to run into problems where heat from these bulbs cause the housing to warp or melt due heat build up. I like the idea of lower current draw and less heat from the LEDs, but if they don't make an amber LED that can be seen during daylight hours, it kind of defeats the purpose of having DRLs. Any help would be appreciated.
     
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  2. Ryanpl

    Ryanpl Active Member

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    Hey Paul, I was looking at the same bulb as you for my turn signals and e-mailed the company for info on the light. here is what they said: In terms of brightness these are our 5050 SMD Chip, which is equivalent to 56 LED. I have a gen two so not much help in locating your rely. ours is under the hood. when you get the bulbs please let me know how bright they are. ryan
     
  3. cproaudio

    cproaudio Speedlock Overrider

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    I was looking for the flasher relay too. At first I thought it was inside the white fuse/junction box underneath the dash but it's not. It's tucked way above the brake pedal switch. The relay is blue and is mounted on some white plastic bracket. You can forget about pulling the original relay off the bracket. It won't come out. All I did was unplug the relay, plug in the LED relay, tuck the LED relay up and call it a day. The LED flasher will also work with regular bulbs so you don't have to worry about using the original bulb. As for Amber LED turn signals the one you linked is a very common 18 5050 SMD LED. The one you need is the 30 5050SMD LED. Unfortunately the ones I've found are either white or red. I got the white for my reverse light. Although it's not as bright as the original bulb but it's really close. I would say about 80-90% as bright. The bad part is that the color is 6000k and it's not visible when the sun is shining directly at them. As for using the OEM bulb as DRL, I really don't know if it'll get hot enough to burn the housing.

    Edit:
    If the flasher is under the hood then how do you hear the turn signals clicking inside the car?
     
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  4. Paul58

    Paul58 Mileage Miser

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    Thank you for the help in locating the relay! Do you have to remove any dash panels to access it?

    I had the same issue trying to find an Amber Bulb, seems are the really bright ones are either white or red! Go figure...

    I put the stock bulbs back in yesterday just because they are brighter and the hyper flashing was driving me nuts! Good to hear the new relay will work fine with both the OEM bulbs and LEDs. Not sure how many more LEDs I'll experiment with if these aren't any brighter than what I already have, the experimentation could get expensive!
     
  5. Paul58

    Paul58 Mileage Miser

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    Ryan,

    This is good news! I'll let you know how bright they are, hopefully, I'll have them by this weekend.
     
  6. Paul58

    Paul58 Mileage Miser

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    Got the bulbs and the relay... I have looked up under the dash and have no idea what I'm looking for, so still don't have the relay installed. The new bulbs are in, still not as bright as the OEM bulbs but twice as bright as the original LEDs I had in it. I'm much happier with these, and if I can find and get to the relay, I'll get rid of the hyper flashing and will really be happy!
     
  7. cproaudio

    cproaudio Speedlock Overrider

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    When you look under the dash, look at the brake pedal. There should be a switch with some wires coming out of it. It's above that switch. You can pull the lower dash trim where the dimmer switch is, loosen the fuse/junction box and look through the dash. If you're looking from under dash, you have to place your head closer to the parking brake to see it.
     

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  8. Paul58

    Paul58 Mileage Miser

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    That picture helps a lot! Still don't know if I'll be able to get to it, I tried looking up under the dash yesterday, and this old body just doesn't contort like it used to! I'll let you know how it goes, and thanks again for the help!
     
  9. Paul58

    Paul58 Mileage Miser

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    UPDATE: Finally crawled under the dash and replaced the relay, what a PITA! There was no way I was going to get my head far enough under the dash to see the relay (I have no idea how cproaudio snapped that picture), so I had to go by feel. Essentially, I turned on the car, turned on the blinker and felt around in the general area of cproaudio's picture till I felt the clicking of the blinker. It took about an hour of trying to figure out how to release the wire connector from the relay going by feel, but finally figured it out. For those other adventurous soles, there is a clip on one side right at the edge of the connector closest to you that you have to squeeze pretty hard while applying downward pressure on the wire harness to get it to release. Once it's free, you have to plug the new relay in by feel as well, fortunately, it only goes one way, but it did take some manual dexterity to align it and squeeze the connector onto the relay using only one hand. At the moment, the relay is just hanging free under the dash, I'll figure out how to secure it another day, after my body recovers from the contortions I had to go through to just swap the relay! I'm sure someone will come along and tell me an easier way to do it, but without disassembling the dash, this was the only way I could figure it out.

    Final result: Blinkers are back to blinking normally! All four turn signal lights still blink when you lock/unlock the doors, and I'm very happy with the new LED Bulbs that act as DRLs and turn signals. They are only slightly dimmer than the OEM bulbs during the day, and there no discernable difference at night. Plus, being white, you don't have the egg yolk look above the fog lights. It took awhile, but I'm happy with the final results!
     
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  10. shawnb2

    shawnb2 Active Member

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    What is the part number for the flasher unit and where did you find it? I'm not going to see you at the meet tomorrow since you are working so I'll ask you here. It's weird, I have the MBRO front signals like Rodney's, did the DRL kit and has worked fine for the last few days. Today all of a sudden my drivers side hyper flashes. Hoping this works. Thanks in advance.
     
  11. cproaudio

    cproaudio Speedlock Overrider

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  12. shawnb2

    shawnb2 Active Member

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    I seriously hope to never have to do that again! What a pain in the a$$!! My hands are shredded from trying to reach up there. I got it and at first the flasher didn't work. It made the noise but no lights. Ended up trying to put the stock unit back in, blew the fuse. Drove to Pep Boys and got new fuses. Tried the new flasher again and it worked. Go figure. As long as it works that's all I care about. Thanks again guys for showing the how to.
     
  13. gust242

    gust242 New Member

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    hello
    was the pic on your 2010 ?
     
  14. Paul58

    Paul58 Mileage Miser

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    Yep, it was a 2010, but 2011 should be the same if that's what you're wondering...
     
  15. gust242

    gust242 New Member

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    yep it is I tryed looking for it could here the thing but still not able to find it.could never find the flasher in my taco truck but the take the same relay so I already have one I will look more when I have more time tho .

    thanks Jay
     
  16. XMAN LIVE

    XMAN LIVE "Just have Fun!"

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    So you installed DRL-2P from WebElectronic can you share some pictures of wire hookup... Sounds like you used
    30 5050SMD LED white... where did you get this and has anyone found a better light yet.. I was thinking I would use flasher from WebElectronic also One-Touch flasher module (
    OTS-1T One-Touch Turn Signal Module) that simply replaces the turn signal flasher that's in your car. It is programmable to a range of about 2 to 8 flashes, PLUS, AS AN ADDED BONUS this module will work with LEDs!
     
  17. Paul58

    Paul58 Mileage Miser

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    I had a local auto audio shop install the DRL module the same time I had the fog lights installed, so unfortunately I don't have any pictures. The LEDs I installed were amber, same as the turn signals. I have since removed them and replaced them with the OEM bulbs. The LEDs were not very bright and I felt they were worthless as DRLs because of that. I don'recall where I bought them. I have no knowledge of the relay you refer to, however, the relay I installed will work with either the standard bulbs or LEDs. I nexer removed it, and it's working fine. If I ever go back to LEDs, I won't have to worry about the relay!
     
  18. XMAN LIVE

    XMAN LIVE "Just have Fun!"

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    So I take it no issues from amber OEM bulbs causing damage to fixture when on all the time as DRL?
     
  19. Paul58

    Paul58 Mileage Miser

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    None so far, and they have been that way all summer. Look at a Cadillac CTS sometime, their DRLs are amber and on all the time, my Prius looks very similar (meaning the DRLs not the car). The OEM bulbs are very visible in bright daylight (when they need to be) the LEDs, on the other hand, were not nearly as bright and it was hard to tell they were even on.
     
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  20. gust242

    gust242 New Member

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    Thanks this was a real help with my 2011 darn thing was almost in the top inside of the dash but I got it !