1990 Dash Install
Thread Starter
Cruising
Joined: Feb 2016
Posts: 14
Likes: 0
1990 Dash Install
I acquired a 1990 with a large portion of the dash removed. I have the parts diagram from my local dealer and the FSM. The vehicle has factory Bose system, which complicates the installation. The speakers and the amplifier(s) and the pre-amp have been rebuilt and a new head unit was going to be installed. I would like to find someone that took their dash apart and took many pictures. If anyone has any additional diagrams those would be welcomed. The prior owner installed a new heater core so that long-term issue is resolved. It appears that the 1990 and 1991 had very similar dash layouts. The last issue is matching the new head unit with the pre-amp. I was given two sets of possible wiring sets that could be used to match the new head unit but not much information. Before I abandoned the Bose amp and speakers, I would like to try to match the new head unit.
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
Event he Bose radios are the same form 91 and 90. Pictures will help, did oyu buy a car with the dash out and now you need to piece it back together?
the major differences from 90-91 are:
- Dash harness
- Air Bag system
- CCM
the major differences from 90-91 are:
- Dash harness
- Air Bag system
- CCM
Thread Starter
Cruising
Joined: Feb 2016
Posts: 14
Likes: 0
Dash Install
Here is a picture of the mess. I have installed the new carpet in the luggage area and need to complete the carpet in the front. However, I would like to get the dash back together before I finish the carpet. Also would like to get the audio working before I complete the dash reinstall. I hope the picture is attached.
Zen Vet Master Level VII
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Wow. You certainly have a project.
I'm not sure where you would begin, but for me, I'd start with a FSM and put it all back together according to specs THEN I'd worry about your audio after everything is confirmed and working.
If you try to test or modify your current electrical tangle you could really mess (short, melt, etc) something bad. Best to play it safe and putting it back to factory will actually be quicker in the long run.
I'm not sure where you would begin, but for me, I'd start with a FSM and put it all back together according to specs THEN I'd worry about your audio after everything is confirmed and working.
If you try to test or modify your current electrical tangle you could really mess (short, melt, etc) something bad. Best to play it safe and putting it back to factory will actually be quicker in the long run.
Last edited by billschroeder5842; Feb 3, 2018 at 09:34 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
Melting Slicks
Joined: Jul 1999
Posts: 3,214
Likes: 101
From: Decatur, Alabama
What state are you in? I would help you if you are in/close to Alabama
I acquired a 1990 with a large portion of the dash removed. I have the parts diagram from my local dealer and the FSM. The vehicle has factory Bose system, which complicates the installation. The speakers and the amplifier(s) and the pre-amp have been rebuilt and a new head unit was going to be installed. I would like to find someone that took their dash apart and took many pictures. If anyone has any additional diagrams those would be welcomed. The prior owner installed a new heater core so that long-term issue is resolved. It appears that the 1990 and 1991 had very similar dash layouts. The last issue is matching the new head unit with the pre-amp. I was given two sets of possible wiring sets that could be used to match the new head unit but not much information. Before I abandoned the Bose amp and speakers, I would like to try to match the new head unit.