Blown License Plate Light Fuse - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



Welcome Enthusiast! If you already own a Chevy TrailBlazer or GMC Envoy or perhaps thinking of purchasing such a vehicle, then you have come to the best TrailBlazer and Envoy site on the net! Rainier, Bravada, Ascender, and 9-7x owners welcome too!

You are currently viewing our site as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to search and post topics, communicate privately with other members, respond to polls, upload content, and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.
Join Today!
Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

TrailVoy.com is the premier GMC Envoy Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
  #1  
Old 04-26-2009, 05:40 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
Blown License Plate Light Fuse

I recently converted my rear license plate lights to 194 LEDs (along with interior lights and reverse, turn, and brake lights). I had to wire resistors in line with the turn signal LEDs but not the reverse or brake LEDs and all the LEDs work fine except for the license plate lights. The fuse for the plate lights blows immediately upon turning on the exterior lights (not DRLs). Trying to troubleshoot, I put the OEM 194s back in and the fuse still blows.

Has anyone had the same problem or similar? Or have any ideas what the problem could be?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 04-26-2009, 05:54 PM
RayVoy's Avatar
RayVoy RayVoy is offline
TrailVoy Guru
 
2009 Chevy Avalanche LTZ
Black 5.3L V8 4X4
Join Date: Jul 2006
Location: Atlantic Canada
Posts: 6,431
If the plate lights worked before you started the mod, it must be something you did.
Go back and recheck everything you touched, somewhere there is a short to ground.
__________________
Ray
Reply With Quote Quick reply to this message
  #3  
Old 04-26-2009, 06:49 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
I went back and rechecked everything. The fuse blowing is fuse 14 in the rear fuse block. The only two components attached on the neg side of fuse 14 are the license lamps (brn = pos; blk = neg)and the left rear brake light (brn = pos; blk = neg). No brn wires were harmed in the making of this mod. I only wired a resistor inline across the lt blue and blk wires (lft rear turn). I can't see how that would affect the license lamps.
Reply With Quote Quick reply to this message
  #4  
Old 04-26-2009, 06:59 PM
RayVoy's Avatar
RayVoy RayVoy is offline
TrailVoy Guru
 
2009 Chevy Avalanche LTZ
Black 5.3L V8 4X4
Join Date: Jul 2006
Location: Atlantic Canada
Posts: 6,431
That fuse also protects the left rear tail-light (I am sure that's what you called brake light) as well. Did you change anything in that area?
__________________
Ray
Reply With Quote Quick reply to this message
  #5  
Old 04-26-2009, 07:04 PM
tallcorn tallcorn is offline
Member
 
Join Date: Apr 2009
Posts: 137
? Resistor inline or across?
Reply With Quote Quick reply to this message
  #6  
Old 04-26-2009, 07:06 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
Quote:
Originally Posted by tallcorn View Post
? Resistor inline or across?
Sorry, across the lt blue and blk wires (left rear turn signal).
Reply With Quote Quick reply to this message
  #7  
Old 04-26-2009, 07:12 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
Quote:
Originally Posted by RayVoy View Post
That fuse also protects the left rear tail-light (I am sure that's what you called brake light) as well. Did you change anything in that area?
I just wired the resistor across the lt blue and black wires. And looking at the wiring diagram, that shouldn't have anything to do with the license lamps. I'm thoroughly frustrated.
Reply With Quote Quick reply to this message
  #8  
Old 04-26-2009, 07:15 PM
RayVoy's Avatar
RayVoy RayVoy is offline
TrailVoy Guru
 
2009 Chevy Avalanche LTZ
Black 5.3L V8 4X4
Join Date: Jul 2006
Location: Atlantic Canada
Posts: 6,431
Benjamin, this is a very simple circuit. The left tail light shares the fuse with the plate lights.
The left tail light shares the bulb with the left signal light.

Do you see anything common Here?

Go back and re-check the wiring.
__________________
Ray
Reply With Quote Quick reply to this message
  #9  
Old 04-26-2009, 07:19 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
Ah, crap. I completely glossed over that. Perhaps I spliced into the wrong lt blue wire, seeing how one lt blue goes to just the turn lamp and the other goes to the turn lamp as well as the brake lamp connected to fuse 14. Now where are my wire strippers...
Reply With Quote Quick reply to this message
  #10  
Old 04-26-2009, 08:04 PM
barelybenjamin's Avatar
barelybenjamin barelybenjamin is offline
Junior Member
 
2009 Chevy TrailBlazer SS
Black Granite Metallic 6.0L LS2 V8 AWD
Join Date: Dec 2008
Location: Spring Lake, NC
Posts: 25
Ok, so I spliced the resistor into the other lt blue wire and it still blew the fuse, and the infamous hyperflash returned. So I removed the resistor completely and the fuse obviously didn't blow.

So Any recommendations on what I can do to save the fuse? Perhaps a strategically placed resistor? I'm obviously far from being an electrician.

Or is it a compromise? Get rid of hyperflash and lose license lamps, or save license lamps but deal with hyperflash?

I'm stumped...
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register.

Please enter your desired user name, your email address and other required details in the form below.
(Only letters, numbers, dashes and underscores are permitted for user names)
The user name that you choose is permanent and can never be changed.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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

Forum Jump


» Sponsors

Advertising Info

All times are GMT -4. The time now is 12:13 AM.


Chevy TrailBlazer and GMC Envoy Enthusiasts - Copyright 2004 - 2009 All Rights Reserved.
All trademarks referenced herein are property of their respective owners.
RSS Feed