Delta00's 2002 Tacoma 4WD

Go Back   Tacoma World Forums > Tacoma Garage > Lighting

Notices

Interior Wiring Help

Reply
 
Thread Tools Search this Thread
Old 03-11-2015, 03:33 PM   #1
geodude [OP] geodude is offline
Member
geodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud ofgeodude has much to be proud of
Joined: Aug 2013, #110690
Gender: Male
Posts: 91
geodude's Tacoma Gallery
Interior Wiring Help

I'm about to put in a couple of small LED strips as footwell lights off of my dome light circuit. I'd like the lights to function like the dome light, on with the door open or manual on, and fade to off with door closing. Truck is a 2002 Reg. Cab 4x4 Base DLX.

I'm alright with a wiring diagram, and have a pretty good idea of how I'm going to go about this, but wanted to double check first as I know others have added these lights before.

My plan is to tap the hot wire of the LEDs into the Black wire (#11 out of Body ECU) and the neg wire of the LEDs into the Black/White Striped wire (#12 out of Body ECU). I've located these two behind the junction box, but it's so busy back there I plan on tapping them at the drivers side pillar.

Is this what others have done? Or anything obviously wrong about this plan? Appreciate it.

  Reply With Quote
Old 03-11-2015, 03:44 PM   #2
Mmmm...Tacos
fergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud of
 
fergyz's Avatar
Navy: PR
Joined: Apr 2012, #77624
Location: 49th State
Gender: Male
Posts: 249
fergyz's Tacoma Gallery
i would advoid powering the LED's from the body ECU. an unintentionally short could take out the body ECU. i would find or run a fused 12v wire to a relay for those LED's.
  Reply With Quote
Old 03-11-2015, 03:48 PM   #3
Mmmm...Tacos
fergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud of
 
fergyz's Avatar
Navy: PR
Joined: Apr 2012, #77624
Location: 49th State
Gender: Male
Posts: 249
fergyz's Tacoma Gallery
The body ECU provides the ground side to the dome light circuit. you can easliy tie into the the #12 wire to trigger the ground on the relay. pin #85 usually.
  Reply With Quote
Old 03-11-2015, 03:52 PM   #4
!@$%#
robssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shedrobssol is one of the sharper tools in the shed
 
robssol's Avatar
Name: Rob
Joined: Jun 2013, #105622
Location: S. Wisconsin
Age: 48
Gender: Guy
Posts: 2,077
robssol's Tacoma Gallery
I think if you tap into the wires as planned you will be bypassing the switch and the lights will be on all the time. Instead of tapping into #12 go to ground. This would parallel the dome light circuit.
Edit: instead of going to ground it looks like you would have to tap in before the switch to make it work. Fergyz may be on the right track with the relay idea, but you won't get the fade effect with a relay.
  Reply With Quote
Old 03-11-2015, 05:22 PM   #5
Lurker No More
caribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shed
 
caribe makaira's Avatar
Navy: CAG11 & VAW-117 AME2
Joined: Feb 2011, #51121
Location: Caribbean, Puerto Rico
Gender: Male
Posts: 457
caribe makaira's Tacoma Gallery
Added LED to interior lights

  Reply With Quote
Old 03-12-2015, 09:13 AM   #6
Mmmm...Tacos
fergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud offergyz has much to be proud of
 
fergyz's Avatar
Navy: PR
Joined: Apr 2012, #77624
Location: 49th State
Gender: Male
Posts: 249
fergyz's Tacoma Gallery
Quote:
Originally Posted by caribe makaira View Post
I still stand by on my comment on not pulling power from a 12v output from the body ECU.

as for the diagram above, i was going to recommend attching the ground wire at that exact point in the dome light circut. that will cover both manual and automatic turn on of the LEDs. I just don't know how easy or hard it is to do that. i have not pulled apart the dome light as of yet.

i will tell you, a fused power wire to the LED's is the best practice to prevent accidental wire fires.

a relay is not needed in this case if you tie the ground wire to that point in the circuit.

You will need a diode on the ground side wire. this will prevent 12v from the light circuit back feeding through the LED's if the positive wire is touched to ground.

it may be strange to hear.... but the dome light bulb to the overhead switch will have 12v to it at all time. once the switch or body ECU provides the connection to ground, this will allow the current to flow and bulb will light up.

so this will result having 12v applied to the ground side until activated.

hope that last part makes sense.
  Reply With Quote
Old 03-12-2015, 10:33 AM   #7
Lurker No More
caribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shedcaribe makaira is one of the sharper tools in the shed
 
caribe makaira's Avatar
Navy: CAG11 & VAW-117 AME2
Joined: Feb 2011, #51121
Location: Caribbean, Puerto Rico
Gender: Male
Posts: 457
caribe makaira's Tacoma Gallery
If you look closer, the BECU has a fuse power input (15 amps) dedicated for the interior lamps. Which allows for lamps function when vehicle engine is OFF. It's not taking or adding for that matter to the BECU. The added LED's are a minuscule addition to the DOME circuit. I would however recommend that all lamps in that circuit be changed to LED so more lamps may added later. (And maybe extinguish thoughts of fires and vehicle loss)
OP hasn't added info on the specifics of the LED he will add...I.E. Fighter Cockpit or RAVE Party...

  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
2014 Interior fuse block wiring question Square Technical Chat 6 05-17-2014 10:27 AM
3rd brake light wiring on a leer camper top with hard wired interior roof lights JcDillon 2nd Gen. Tacomas 4 01-28-2014 05:09 PM
Leer camper shell and interior light wiring cstallings 2nd Gen. Tacomas 10 04-27-2013 11:35 AM
Interior LED wiring help! BBiggs 2nd Gen. Tacomas 1 04-30-2010 07:45 PM
TSB or RECALL for Driver Side Airbag wiring (Interior)... is this true? w8n4mud 2nd Gen. Tacomas 1 12-19-2009 12:18 PM


Copyright © 2015 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.