ERG80's 1997 T100 SR5

Discussion in '05+ Tacoma, T100, Highlander' started by ERG80, Jun 10, 2012.

  1. ERG80

    ERG80

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    The truck is still running amazingly well. Im thinking about wiring the aux lights to the high beams instead of an independent switch. Does anyone have experience doing this with a t100? Any advice?
     
  2. KliersLC

    KliersLC

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    Not on the T100, but this should work equally well for the T100 as the 80. On my T100 I just used a generic toyota light switch to drive a relay for the hellas. On the 80, I got ambitious a few years back and decided to re-purpose a rear heater switch. The rear heater switch has two settings and a center off position. This gives me an option to turn on the driving lights independently via the left position and links them to the high beams via the right position. This is where it gets a little weird. Toyota used a switched ground for the heater switch so if you want the LED indicators in the switch to work (green for high beam connection and orange for "On") you'll have to wire things a little backwards. If need be, I can draw up a diagram but the long and short of it is to run two relays with main power coming straight from the battery to the relay and then output power to the lights. Then run signal power for the orange side(I used an ignition switched source but you can use standard battery power if you want.) I wanted to make sure the lights couldn't work without the ignition on...YMMV. Then run the relay ground to the heater switch. Now run the signal power for the green side from the high beam wire for the headlights--you can tap into the high beam headlight relay here if you prefer that to a vampire connector. Then run the relay ground to the green side of the heater switch. The switch will need the two ground wires from the relays and a ground wire for the switch itself. It will also need a power source for the internal illumination bulb--best to tap into an adjacent switch so that it will dim with the dim controls.

    This may be able to be accomplished with one relay, but it will need to have an extra couple connectors to keep things from backfeeding. I had the standard relays laying around so I used them. Take a look at the 80 series forum for instructions on re-labeling the switch.
    SWITCH RELABLES- printable single sheet


    Hope that helps,

    Dan
     
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  3. ERG80

    ERG80

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    Amazing. I hadn't even thought of using a rear heater switch. I really like the freedom of being able to turn on the lights with the truck off at camp sites and such which is why I wired them that way originally. This is he best of both worlds. Thanks so much!
     
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  4. KliersLC

    KliersLC

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    Not sure if this helps but here are a few pics and other ideas. Here is the relabeled switch with indicators on. IMG_20180128_140939633.jpg IMG_20180128_140932286.jpg

    IMG_20180128_141007654.jpg
     
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  5. KliersLC

    KliersLC

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    I think you can remove and re-orient the hi and lo stickers to suit the vertical placement in the T100. If not, here are a couple more options that work with vertical orientation.
    2nd start\power switch and 4runner rear heater switch. I think the 4runner heater switch doesn't have a light but I am not sure. IMG_20180128_141548263.jpg IMG_20180128_141416294.jpg
     
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  6. KliersLC

    KliersLC

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    Also. As I have thought more about this, I seem to remember an issue with tapping into the dash dimmer circuit. It may be another switched ground type thing where the ground for the back light goes through the dimmer control but I am not sure. If need be I can take a look at my wiring and give a positive answer.
     
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  7. KliersLC

    KliersLC

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  8. ERG80

    ERG80

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    I have an old 2nd start switch but I think it's broken. A long time ago I tried taking it apart and making a two button momentary switch for a garage door opener but things didn't go well.

    I really like the rear heater switch.Thanks for the link and taking the time to type the instructions. I need to find some time to tinker around with it but I think that it will be perfect.




     
  9. ERG80

    ERG80

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    The t100 still amazes me. Still no issues and I've been hauling trailers full of stuff lately. I love this truck.
     
  10. ERG80

    ERG80

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    The truck has 278000 miles and just helped move our family closer to "home". hopefully it will see more local adventures hauling kayaks and camping.
     
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  11. ERG80

    ERG80

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    The T100 hauled kayaks for our first adventure since moving home. Two tandem kayaks and a single seater. Light duty for the old truck.

    IMG_3049.JPG
     
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