Help with light bar wiring

[Cass Lurker Find all posts View Profile Close Cass]

Hi Guys,

So total learner here and am not afraid to say so. I have a light bar that came with a wiring harness. I think I know what do do with it all except the "headlight connector"? I have attached a picture of the wiring harness set up.



https://www.4wdsupacentre.com.au/cat...9/image/42018/

Also it mentions if your car is negatively wired something has to be modified.... is a 120 prado negatively wired? Whatever that means.

Thanks guys maybe I am biting off more than I can chew but loved installing by UHF and am looking forward to doing the light bar and learning more about the car I love.

NOTE - I realise its a cheap wiring harness from 4wd supa centre but am only starting out on my 4WD adventures and discovery.

Thanks for your time and help!!

[BiLLz0r Advanced Member Find all posts View Profile Close BiLLz0r]

Try this
https://www.dropbox.com/s/vqeft8aevw...AGRAM.pdf?dl=0

[BiLLz0r Advanced Member Find all posts View Profile Close BiLLz0r]

Oh btw, I found out mine is +ve switched. 07 facelift (so 08 spec). I wish I knew that before hand.

[Cass Lurker Find all posts View Profile Close Cass]

Thanks for the help but still very confused... I just need to know where the headlight connector goes exactly. Also does that mean my 04 VX is also positively switched?? How do I know?

[BiLLz0r Advanced Member Find all posts View Profile Close BiLLz0r]

Thanks for the help but still very confused... I just need to know where the headlight connector goes exactly. Also does that mean my 04 VX is also positively switched?? How do I know?

Use a multimeter. Lights off, engine on (my lights turn off with the engine).
Unplug the H4 plug from the bulb on the left side (passenger side). Measure from each terminal on the plug to ground. If it's 12V (or higher) then it's -ve switched as it will go to ground when on. If it's 0V then it's +ve switched as it will go to 12V when on.
My highbeam wire was red with white stripe down it. Found it under the dash in the drivers side kick panel. Will splice into that cable over the weekend to power my switch. That way the switch doesn't work unless high beam is on.\

On my car it was the top connector of the H4 plug.