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2004 Tacoma Dash Light LED Conversion

Discussion in '1st Gen. Tacomas (1995-2004)' started by LarryC, Jul 10, 2014.

  1. Jul 10, 2014 at 4:51 PM
    #1
    LarryC

    LarryC [OP] Just another slob that loves taco's

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    Tucson, AZ
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    '04 Prerunner SR5
    I just bought a new to me 04 Taco and some of the dash bulbs weren't working so I pulled the dash (thanks to a lot of great how-to's), I'm going to go the LED route.

    Since LED bulbs are polarity specific I'm having a hard time figuring out which side of the connections are Positive and which is the ground. I've searched hard (probably not hard enough :rolleyes: ) but can't find a wiring diagram for the gauge cluster.

    Yeah, I know, plug them in and test'em then reverse if needed but I'm replacing all of the bulbs with LED's I really don't want to install the dash just to test and then remove it again to correct. Also, I'm not 100% sure how to test all of the bulbs. Problem is I think I need to connect all switches which currently aren't connected since pulling all of the panels. The one panel that covers the gauge cluster (which has the switches on it) is a pain to remove/replace.

    Sorry for the long post, but does anyone have a wiring diagram for an 04 Tacoma gauge cluster?

    Thanks,
     
  2. Jul 10, 2014 at 4:58 PM
    #2
    Jerez

    Jerez SoCal LED Dash Swap

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    Roderick aka Royer
    Ontario/Chino Area (CALI)
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    Half LT dont count
    Dude the dash is going to be out...4 bulbs only
    Untwist, plug in new LEDs, twist back Into place...plug it in. Takes you seconds to switch the bulbs polarity over hours finding wiring schematics :rolleyes: lmao
     
  3. Jul 10, 2014 at 6:17 PM
    #3
    LarryC

    LarryC [OP] Just another slob that loves taco's

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    Tucson, AZ
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    '04 Prerunner SR5
    Actually it's more like 20 LED's, I'm replacing all bulbs, not just the gauge lights. 4 194's or T10's and 16 of the 74 or T5's. Which brings me to the point of how do I check all of the lights? With a schematic it would be real simple, I've already identified the LED's polarity. I'll keep looking, I'm sure I'll figure it out and if I do I'll post my results here in case someone else wants to do it.
     
  4. Jul 10, 2014 at 9:35 PM
    #4
    Jerez

    Jerez SoCal LED Dash Swap

    Joined:
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    Roderick aka Royer
    Ontario/Chino Area (CALI)
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    08 TRD ESport DCLB
    Half LT dont count
    taking the dash itself (all panels) yea its a bit of a pain, but once the cluster itself is free you can just move around with it...idk super easy but ive done tons on 1st and 2nd gen swap :notsure:

    alright for sure :thumbsup: hopefully you find what youre looking for.
     
  5. Jul 10, 2014 at 10:44 PM
    #5
    frizzman

    frizzman Well-Known Member

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    da 'burgh, PA
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    04 XCab 4x4 TRD/OR
    hitch w/ 7-pin (custom wired), Leer cap (LMM), Green Filter, JVC head unit (orange color to match), Infinity amp/10" subs. Undercover tonneau.
    you don't need to do this in reality. only the 4x 194 bulbs are actually changing anything. the little bulbs are not going to look different unless you are trying to make every warning light/accessory light blue or red or some whack-ass color :rolleyes:

    I just pulled the cluster forward, covered my head and cluster with a towel and made sure they worked. easy-peasy
     
  6. Jul 10, 2014 at 11:20 PM
    #6
    LarryC

    LarryC [OP] Just another slob that loves taco's

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    Tucson, AZ
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    '04 Prerunner SR5
    Some of us are anal okay? :) Yeah, I know it's not necessary but hell I was bored and thought why not go all LED on the dash, when I figure it out I doubt I'll ever have to replace these lights again. I'm going blue on the gauges but sticking with white so it will appear all stock on the idiot lights. Thought briefly about going all blue but I'm not that bored nor want to over do it.

    Update, I finally found a schematic so my questions have been answered. I'm attaching the schematic I found that might help anyone else that is wanting to do this.
     

    Attached Files:

  7. Jul 11, 2014 at 9:48 PM
    #7
    LarryC

    LarryC [OP] Just another slob that loves taco's

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    Male
    Tucson, AZ
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    '04 Prerunner SR5
    Following up, I just finished it and all is well. Couple of notes here, the charge light and fuel lights don't like LED's. The charge light stays lit even when the system is charging/running properly. It goes from bright to a dimmer light, it's still visible so I reverted to an incandescent bulb. Fuel light simply stays on, so I removed the LED and put a bulb back in. I'm sure the circuitry is expecting more of a load than an LED can provide.

    Here's the result:
    [​IMG]
     
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