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How many amps can the auto-fade door light circuit handle?

Discussion in '1st Gen. Tacomas (1995-2004)' started by petronemoslappywag, Sep 15, 2015.

  1. Sep 15, 2015 at 11:40 AM
    #1
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    Howdy from a new Taco owner. I am not doing an LED conversion, however, I only have the basic model with solely the dome light. I just bought a 4Runner map light to do the conversion on it, and want to know how many amps the circuit can handle, because I plan to run a couple footwell lights off it as well, so everything fades out and turns off.

    Any ideas? I didn't find any fuse listed in the circuit of the diagram that I found, hence the question.
     
  2. Sep 15, 2015 at 11:44 AM
    #2
    Large

    Large Red

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    I think you would be okay just by adding the foot well lights. If you swapped to LEDs you will have more than enough amperage as halogens require more amps than LEDs.
     
  3. Sep 15, 2015 at 12:17 PM
    #3
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
    So existing Dome light (DE3175 - 0.77 Amps, 10W) + Map lights (20W) (with the door switch in the ON position), plus two foot well lights. So, I am guessing around 50 W somewhere total? I know LED's are lower amperage, but I just want regular old low-tech bulbs. I can't imagine Toyota would have used a different spec in the wiring harness or fuses, etc., so I am thinking this should support 50W just fine. 0.77 x 5 = 3.85 Amps.
     
  4. Sep 15, 2015 at 12:58 PM
    #4
    Indy

    Indy Master of all I survey.

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    What ga is the wire? That's your answer right there. You'll need at least 23ga.
     
  5. Sep 15, 2015 at 1:02 PM
    #5
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
    Not sure, I haven't disassembled anything yet.
     
  6. Sep 15, 2015 at 1:57 PM
    #6
    keakar

    keakar Well-Known Member

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    I think it would be fine with the added map lights but if you intend to add floor lights too then they should be LEDs just to avoid overloading the control circuit for them. our trucks were not designed with floor lighting so it would be more then its designed to be normally pulling so regular incandescent lights would be a bad idea.

    I think its best to just get something like these and you don't have to worry about overloading anything http://www.ebay.com/itm/2pcs-HID-Wh...mps-/281534796644?hash=item418cc81364&vxp=mtr
     
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  7. Sep 15, 2015 at 1:58 PM
    #7
    Aw9d

    Aw9d That one guy

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    Hook up a relay and never worry about it again.
     
  8. Sep 15, 2015 at 2:54 PM
    #8
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
    I thought about this, however it seems like the floor lights would not dim. The relay's primary coil would reach minimum saturation (and holding power for the reed/movement assembly) and just switch off at some point, but power would be either applied or not applied, and suddenly.

    I am thinking maybe soft white, dimmable LED's are going to have to be the route -- if they make such a beast. Not too keen on the bright whites.
     
  9. Sep 16, 2015 at 10:20 AM
    #9
    Indy

    Indy Master of all I survey.

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    Why dim the floor lights? Seems like a need or don't need position.
     
  10. Sep 16, 2015 at 10:27 AM
    #10
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
    Why not dim them? The idea is to make it appear factory installed. :)

    I think I am going to go with full warm white LED conversion, add the floor lights, etc., and use a 15 Ohm 10W resistor to make the dimmer happy. The original bulb for the circuit is 10W and is 14.4 ohms across the filament. Seems that everyone doing the conversions is using a single or dual 100 ohm 1W resistor for some reason. For $3.00 I figured why not make it match the expected load?

    I'll post up some pictures when I get done with it.
     
  11. Sep 22, 2015 at 8:06 PM
    #11
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    '03 Xtra Cab 4x4 2.7
    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
  12. Sep 22, 2015 at 8:06 PM
    #12
    petronemoslappywag

    petronemoslappywag [OP] I gotcha a dollar. Now give it back.

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    David
    North of Seattle
    Vehicle:
    '03 Xtra Cab 4x4 2.7
    Westin bug deflector and bed rail covers, Trail Gear rock sliders, LED Interior with footwell lighting, WeatherTech floor mats, 7 wire trailer harness
    Finished up the lights. Much improved over a standard dome. All dim like factory lights. Did not need a resistor. These lights must provide enough.
     

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