Supra Wiring Diagram

[eder10986]

Hey gang. Looking for the wiring diagram of 2017 SA.

Specifically the helm. Any idea where I could find this document?

Thanks!


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[Holdmybeer]

This is never a good question to see.
You adding stuff or fixing stuff?

[eder10986]

This is never a good question to see.
You adding stuff or fixing stuff?

Haha, right?!

Long story short my underwater leds have not worked since I purchased boat two years ago.

Finally got them fixed over the winter by dealer, however, they are apparently aftermarket and are hooked up to my acc switch below my underwater led light switch.

I have no control over the lights through the screen either.

Looking under the helm there are wires already hooked up to my underwater led toggle switch so I was curious if switching over would be simple or not.

I wanted the wiring diagram to look into this.


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[Holdmybeer]

If the underwater LED toggle switch is used....what is on the other end? Are you able to trace that down?

I thought Supras had LED controllers. If so, the toggle could be powering the controller and then the lights are wired to another switch and not the output of the controller. This would explain if you cannot change colors either.

Just speaking out loud, not saying I'm right at all.

[eder10986]

If the underwater LED toggle switch is used....what is on the other end? Are you able to trace that down?

I thought Supras had LED controllers. If so, the toggle could be powering the controller and then the lights are wired to another switch and not the output of the controller. This would explain if you cannot change colors either.

Just speaking out loud, not saying I'm right at all.

Interesting thought as all my lights are blue but the underwater are white [emoji2955]

I’ll try and trace down what is being used by the underwater switch.

If it is the controller then any idea how or if I can hook up the leds to this switch instead of the acc?


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[larry_arizona]

The newer multicolor LED lights on the Supras do run through an RGB controller.

Not sure on the pre 2018's when they were just blue LED's


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[eder10986]

The newer multicolor LED lights on the Supras do run through an RGB controller.

Not sure on the pre 2018's when they were just blue LED's


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If that is the case with my ‘17, any suggestions if I would be able to tap into the wires?


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[larry_arizona]

The light toggle switches on your dash should have wires running to some sort of vision system terminal block as the toggles are redundant to your vision screen.

You should have 3 or 4 light switch toggles labeled tower, mid ship, underwater etc.

https://uploads.tapatalk-cdn.com/20230417/215e813df76285877703baa261df907f.jpg



Chase the wires and they will guide to the vision system, run the lights to the vision system and verify wires run to the toggle you want on your vision screen, then you should be golden


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[eder10986]

Next time I bring the boat back home that’s what I’ll try and do. Thanks brother.


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[russellsmojo]

Haha, right?!

Long story short my underwater leds have not worked since I purchased boat two years ago.

Finally got them fixed over the winter by dealer, however, they are apparently aftermarket and are hooked up to my acc switch below my underwater led light switch.

I have no control over the lights through the screen either.

Looking under the helm there are wires already hooked up to my underwater led toggle switch so I was curious if switching over would be simple or not.

I wanted the wiring diagram to look into this.


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The boat will have wires ran all the way to the back. They are dead ends tied up near engine. The problem is something to do with the factory lights were pretty weak and the aftermarket require heavier wire or something. I forgot exact reason. Maybe voltage out of touchscreen brain. The pre 2019 brain had some weird quirks with out voltages. Stereo outs have same issue.

So my dealer ran new wires to the toggle switch on dash for underwater lights. No screen ability but it is not really a big deal.


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