headlight relay for toyota

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=119475
Printed Date: July 02, 2025 at 5:25 PM

Topic: headlight relay for toyota

Posted By: quimosave
Subject: headlight relay for toyota
Date Posted: January 19, 2010 at 9:19 PM

im in the process of upgrading my H4 Headlights to higher wattage. i would also want to upgrade my headlight wires to a thicker one. i just discovered that my 11 year old Toyota AUV's (Asian Utility Vehicle) headlight is Negatively Switched. my ride is
Anyone here who has a Relay Diagram for a Negatively Switched headlight?
thanks

Replies:

Posted By: quimosave
Date Posted: January 19, 2010 at 9:21 PM

by the way my ride is called a Toyota Tamaraw FX its a 98 model.
thanks for the help guys.

Posted By: i am an idiot
Date Posted: January 19, 2010 at 10:52 PM

Battery through a 15 amp fuse to terminals 86 and 30. 85 connects to the negative wire that you say is switched. 87 to the positive input of your balast.

Posted By: quimosave
Date Posted: January 20, 2010 at 12:19 AM

i am an idiot wrote:

Battery through a 15 amp fuse to terminals 86 and 30. 85 connects to the negative wire that you say is switched. 87 to the positive input of your balast.

thanks for this quick reply.
will try this later after work, so this will control the negatively switched?
additional question sir,
im planning also to connect two relays on the chain for my H4 socket headlight, one for the Low Beam and one for the High Beam. the relay kits that we have here is for the usual positively switched vehicles. initially when i tried to use one of those kits, the Low beam doesnt turn off even when i flick to High Beam. can i use the relay diagram of yours to control the low beam? so instead of connecting the 87 pin in your diagram to the ballast, i would connect it the 86 pin of the Low beam relay in the kit which was supposed to be connected to the stock low beam wire coming from the headlight switch?
sorry for the newbie questions, im just starting to learn how to use relays and this website helped me alot. thanks

Posted By: t&t tech
Date Posted: January 21, 2010 at 3:21 PM

Yes mr idiot's relay setup will control negatively switched!

To use positive switched just connect 85 to ground and connect 86 to the positive switched feed, the rest of the wiring remains as was posted!

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