trunk light bulb stays on - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 Old 09-03-2016, 11:52 AM Thread Starter
Registered User
 
Trader Feedback: (0)
Join Date: Sep 2016
Posts: 1
Question trunk light bulb stays on

hi guys,

so my trunk light bulb and headliner bulb stays on as if my trunk is always open.

here are some tests I've conducted,


I took my multimeter and checked the ohm at the latch. when it's open there is OHM when latch is in shut position there is no OHM.
which I think makes sense so this confirms my latch is still good.

then I plugged my multimeter on the latch connector. there is tiny amount of voltage which makes sense it has to be always active to detect if latch is open or not and small voltage like 0.00x so that it doesn't drain the batter.

then I checked the connector at the trunk bulb side.

when latch is in open position (trunk is open) there is 12.xx voltage on the wire which mekes sense. now when the latch is shut (trunk closed) I assume voltage should be 0 but it's something like 0.0xx which is enough to power up the bulb.

I need help to figure this out not sure what I'm missing...

Attached Images
File Type: jpg 2016-09-03 11.16.35.jpg (96.0 KB, 4 views)
File Type: jpg 2016-09-03 11.16.45.jpg (100.9 KB, 1 views)
File Type: jpg 2016-09-03 11.16.57.jpg (54.0 KB, 2 views)
blackstangpat is offline  
Sponsored Links
Advertisement
 
post #2 of 2 Old 09-03-2016, 08:11 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,304
What vehicle?

a 12volt incandescent light needs 12 volts, or it goes dim..........

What switches are involved? trunk, door?

If you have a short to power after the switch, the light will stay on until the battery is dead.

link the wiring diagram you are using.


89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Upgrading from '89 to '93 dome light Shaker666 General Mustang Tech 2 05-21-2016 04:25 AM
Trying to reset AirBag light. (need help) Vettn71 General Mustang Tech 3 02-15-2015 12:23 AM
1993 coupe trunk light Coilz347 General Mustang Tech 2 12-26-2014 04:07 PM
Fog Light Bulb Fitment 94GTLaserRC S-197 Mustang GT (2011-2014) 2 05-27-2013 09:36 PM
How to install underhood light - walkthrough w/ pics and part numbers! DuffManRHA General Mustang Tech 4 06-12-2012 11:40 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome