Go Back  Chevrolet Forum - Chevy Enthusiasts Forums > Past Chevy Truck, SUV & Vans > TrailBlazer
Reload this Page >

Rear speaker humming when gauge lights are turned on, aftermarket radio installed

Notices
TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

Rear speaker humming when gauge lights are turned on, aftermarket radio installed

Old June 14th, 2019, 5:20 PM
  #1  
CF Beginner
Thread Starter
 
Join Date: Jun 2019
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default Rear speaker humming when gauge lights are turned on, aftermarket radio installed

Hello all,
I have a 2004 trailblazer, and have recently upgraded the headunit to a new pioneer AVH-110BT. To get past the power problem, I ran two wires to the fuse block from the radio and am drawing power from there. The rear speakers initially did not work at all, and the RSA did not work either, but I took apart the RSA module and connected the input wires from the headunit to the outputs from the RSA for the rear speakers. This allowed me to bypass the RSA controls and get sound directly to the rear speakers from the headunit. All was well until I turned my headlights on and the fuse for the guage lights was blown. I replaced the fuse but then the rear speakers began making a loud humming. After some experimenting I realized that the humming only occurs when the guage lights are switched on, otherwise they operate normally. The humming sounds like some kind of ground loop, but I am no electrician or professional by any means.

Any advice to fix this problem would be appreciated
Tim Rose is offline  
Old June 14th, 2019, 10:49 PM
  #2  
CF Beginner
 
Join Date: Jun 2019
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Default

What do you mean you ran two wires to the fuse box, two positive wires?
Rick Taylor is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: