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Thread: Wiring OEM fog lights and oem switch into van

  1. #1
    Van Enthusiast bikerjosh's Avatar
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    Wiring OEM fog lights and oem switch into van

    So trying to figure out wiring on adding fog lights and a switch. While I have wired a lot of the three wire accessory switches, the Toyota switch has four leads coming off it. Anyone know where the different wires go? My FSM (from an 87') seems to show only two wires coming from switch? Switch is from an 89'.

    Also assuming I can use a traditional 30 amp electrical relay for this, please correct if I am wrong?
    thanks for the assistance -Josh


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    Re: Wiring OEM fog lights and oem switch into van

    Josh take a look at posting #4 in this thread below, Tim has posted a picture of the light relays from the 87' FSM and an 89' FSM, the 89' shows where the relay I see located but it doesn't have a full layout of how it's wired. Do you have a 89' FSM?

    http://www.toyotavantech.com/forum/s...og+light+relay


    I took a picture a while back of a 30amp fog light switch with some wiring diagram showing how the wires run. This is just for reference cause I don't know anything about wiring and haven't had a chance to locate my OEM factory fog light switch to see if it actually has 5 wires coming out as well.

    Not trying to send you off the right track so take this with a grain of salt, could be 2 totally different types of applications.


    If you have yours available maybe pull the pigtail off and check it out?

    JDM
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    Van Enthusiast bikerjosh's Avatar
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    Re: Wiring OEM fog lights and oem switch into van

    My fog light switch is from an 89' versus an 87'. I don't have access to a 88-89 FSM, but I would be willing to bet in that edition it would show four leads coming off the fog light switch, versus only two shown in my electrical diagram?

    So looking at the link you directed me to looks like there was a relay for the 88-89 vans fog light circuit, but no such relay in the 87.
    Any chance you can post the electrical schematic for the fog light circuit from the 88-89 FSM?
    thanks Josh
    1987 4wd 5spd Cargo van (uncut)-modding in 3,2,1

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    Re: Wiring OEM fog lights and oem switch into van

    Sorry I don't have a 89' FSM at this time to post photos of how the wiring runs.

    I just went online and found a 88' & 89' FSM and a 89' EWDSM (Electrical Wiring Diagram Service Manual) and ordered all 3 of them, they should be here in about a week.

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    Re: Wiring OEM fog lights and oem switch into van

    Ok check this out, I found this right on our forum-

    http://toyotavans.org/community/tips...NGDIAGRAMS.PDF

    check out page 12 and it shows the fog light switch and fog light relay.... even though it's from a 87' manual I think this might be what your looking for.

  6. #6
    Van Enthusiast bikerjosh's Avatar
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    Re: Wiring OEM fog lights and oem switch into van

    That looks like the same picture I posted at the start of this thread. Manual I have is an 87', but in the diagram it appears( could be reading it wrong) that the switch only has two wires coming from versus 4 wires on the switch I have. Still confused. -Josh

    Quote Originally Posted by JDM VANMAN View Post
    Ok check this out, I found this right on our forum-

    http://toyotavans.org/community/tips...NGDIAGRAMS.PDF

    check out page 12 and it shows the fog light switch and fog light relay.... even though it's from a 87' manual I think this might be what your looking for.
    1987 4wd 5spd Cargo van (uncut)-modding in 3,2,1

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    Re: Wiring OEM fog lights and oem switch into van

    Awe man I just looked at your posting and it does look like the same thing... sorry about that.

    Check out (for reference) this other photo I found of a 4 wire fog light switch-
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    Van Enthusiast bikerjosh's Avatar
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    Re: Wiring OEM fog lights and oem switch into van

    @JDM VANMAN, no worries thanks for the help. Been working on about 2-4 cumulative hours of sleep for the last 10 days since my son was born so I had to read it a few times to see if I was missing something. LOL.
    Thanks again -Josh
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    Van Obsessed Carbonized's Avatar
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    Re: Wiring OEM fog lights and oem switch into van

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    looks the same to me in 89
    LG.
    "perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away." A. de St Exupery.

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    Re: Wiring OEM fog lights and oem switch into van

    ok, so am I reading the electrical schematic wrong? Shouldn't the schematic show 4 wires coming off the switch? I see 4 off the relay as I would expect, but not switch. Probably a good time to mention I am self taught in automotive electrical, and consider myself ok since nothing I have wired has ever caught fire.
    Josh
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    Re: Wiring OEM fog lights and oem switch into van

    I' am far from an electrician myself. I consider myself more of a fireworks expert, but could this be just a simple on/off "single throw" switch? Meaning it only cut the hot side (+). I can't see why you would need more unless each bulb had it's own circuit, or some thing like a blinking function or two different intensity etc.
    LG.
    "perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away." A. de St Exupery.

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    Re: Wiring OEM fog lights and oem switch into van

    The other two wires should be for the switches illumination circuit. If you look at the back of the switch in the photo you can see the round, white bulb socket. Fog light circuit in, fog light circuit out, light bulb power, and light bulb ground. 4 wires.

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    Re: Wiring OEM fog lights and oem switch into van

    If you look in your schematic under "tail lights and illumination" it shows a bulb circuit for the fog light switch.

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    Re: Wiring OEM fog lights and oem switch into van

    The other two wires should be for the switches illumination circuit. If you look at the back of the switch in the photo you can see the round, white bulb socket. Fog light circuit in, fog light circuit out, light bulb power, and light bulb ground. 4 wires.
    That's why you are paid the big bucks!
    LG.
    "perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away." A. de St Exupery.

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    Re: Wiring OEM fog lights and oem switch into van

    yeah what Carbonized said. Thanks for all the help. -Josh
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    Re: Wiring OEM fog lights and oem switch into van

    Nice you got it

    So what about the relay that's showing up in the 89' but not in the 87', are you gonna have to wire one in separately?

    JDM

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    Re: Wiring OEM fog lights and oem switch into van

    Quote Originally Posted by Carbonized View Post
    That's why you are paid the big bucks!
    I think someone forgot to send me the check.. Lol
    Just glad I could be of some help. That is why we're all here after all.

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    Re: Wiring OEM fog lights and oem switch into van

    So what about the relay that's showing up in the 89' but not in the 87', are you gonna have to wire one in separately?
    I see a relay on both.... The confusing thing to me, is the switch. Shouldn't it be showed as a "double throw" with one side for it own lighting?
    LG.
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    Re: Wiring OEM fog lights and oem switch into van

    Quote Originally Posted by bikerjosh View Post
    Probably a good time to mention I am self taught in automotive electrical, and consider myself ok since nothing I have wired has ever caught fire.
    Josh
    Amateur
    Quote Originally Posted by Carbonized View Post
    I see a relay on both.... The confusing thing to me, is the switch. Shouldn't it be showed as a "double throw" with one side for it own lighting?
    A SPST switch may still be lighted (jumpers on the pic for powering the light)
    The switch should operate the relay which powers both lamps, GW in the schematic.

  20. #20
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    Re: Wiring OEM fog lights and oem switch into van

    And a raise for AceMM!
    LG.
    "perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away." A. de St Exupery.

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