the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

Dome Trigger for LED and Relay, 2000 Toyota Celica GTS


Post ReplyPost New Topic
< Prev Topic Next Topic >
terk 
Member - Posts: 5
Member spacespace
Joined: May 05, 2020
Location: British Columbia, Canada
Posted: May 05, 2020 at 6:36 PM / IP Logged Link to Post Post Reply Quote terk
2000 Toyota Celica gts
Dome is negative trigger ground
I am trying to install 4 or more led strip in the car. Read the topic on this site and Google but still a little confuse. My dome dims when it turns off I would like to keep that function.
Here is my plan use fusebox with relay and the dome switch as trigger.
+12v inline fuse 100amp to 100amp fuse box. Wire is 4 awg because fuse box will be in trunk.
Relay 12v 30/40amp 5pin
Pin 86 and 30 connect to each other to fuse box with fuse +12v
Pin 87 well be acc to the led
Pin 87a leave alone
Pin 85 connecting to dome trigger (-)
Now for diode pin 86 |<-- 85 on the coil or can I tap it into the wire 2 to 3 inch away from the relay.
Well this work with out buzzing and keeping dim function?
Or
Dome use 7.5a
Change dome light to led use .012a and the led is .08a per strip 4x.08a =.32a
Get 2 wires connect to dome light (-) and (+) and connect to led. Diode (+) side facing dome trigger. Still have amp to spare.
I would like to use the first option because I bought all the item already lol.
Toyota
terk 
Member - Posts: 5
Member spacespace
Joined: May 05, 2020
Location: British Columbia, Canada
Posted: May 06, 2020 at 12:40 AM / IP Logged Link to Post Post Reply Quote terk
Oh should I also put a diode from relay (-) 85 |<-- to dome (-) wire? Its a negative trigger.
Toyota
eguru 
Copper - Posts: 340
Copper spacespace
Joined: February 04, 2018
Location: Quebec, Canada
Posted: May 06, 2020 at 8:27 AM / IP Logged Link to Post Post Reply Quote eguru
If your LED strips total draw is 0.32A then just feed the strips directly from the ACC and dome light positive feed using 2 1A diodes (1N4001, etc) to isolate the feeds. Forget the fuse and relay.
terk 
Member - Posts: 5
Member spacespace
Joined: May 05, 2020
Location: British Columbia, Canada
Posted: May 06, 2020 at 4:08 PM / IP Logged Link to Post Post Reply Quote terk
Ty for the replay but I wanted to add a fuse box because later on I'm going to add more gadget. Diode is the problem I'm having pin 86 well be connected to 30 so 86/30 -->| 30 ? Or other way around. The 30 is the dome negative trigger. Do I also put a diode from 30 to dome negative triggers wire.
Toyota
eguru 
Copper - Posts: 340
Copper spacespace
Joined: February 04, 2018
Location: Quebec, Canada
Posted: May 06, 2020 at 4:57 PM / IP Logged Link to Post Post Reply Quote eguru
terk wrote:
Ty for the replay but I wanted to add a fuse box because later on I'm going to add more gadget. Diode is the problem I'm having pin 86 well be connected to 30 so 86/30 -->| 30 ? Or other way around. The 30 is the dome negative trigger. Do I also put a diode from 30 to dome negative triggers wire.
Are you sure your dome light is PWM'ed on the ground side? Usually the dome lights that have the dimming/fade feature are modulated on the plus side. Did you make any measurements with a DMM?
terk 
Member - Posts: 5
Member spacespace
Joined: May 05, 2020
Location: British Columbia, Canada
Posted: May 06, 2020 at 5:36 PM / IP Logged Link to Post Post Reply Quote terk
Dome Trigger for LED and Relay, 2000 Toyota Celica GTS -- posted image.
4 wires to dome.
Red always live
Off dome pin:
Black is ground from trigger to bulb
Live wire middle and bot when lights on
Live wire door position bot right black/white. But door open all 3 live.
Live wire bottom right black/white when lights off
I use a multi meter says my car is negitve trigger. It also has dim i check when closing the door
Toyota
eguru 
Copper - Posts: 340
Copper spacespace
Joined: February 04, 2018
Location: Quebec, Canada
Posted: May 07, 2020 at 9:36 AM / IP Logged Link to Post Post Reply Quote eguru
Convert your negative trigger to a positive output using a relay per
https://www.the12volt.com/relays/relaydiagram8.html
Feed the relay output to your LEDs through a diode.
Feed ACC to your LEDs through a 2nd diode.
Use a small relay - 10A contact rating is more than adequate. Huge 40A relay is not required
terk 
Member - Posts: 5
Member spacespace
Joined: May 05, 2020
Location: British Columbia, Canada
Posted: May 07, 2020 at 2:40 PM / IP Logged Link to Post Post Reply Quote terk
I think I got it I place diode (-) end facing 86 and other end (+) to 85. Tested it, sparks when no diode. I place one it took away the spark when releasing the wire from 85. So my first post at top is good. Thanks 4 the relay :)
Toyota

If you wish to post a reply to this topic, you must first login.
If you are not already registered, you must first register.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Wednesday, July 28, 2021 • Copyright © 1999-2021 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer