Theft deterrent system on 1990 vert...HELP PLEASE!
Thread Starter
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Theft deterrent system on 1990 vert...HELP PLEASE!
While installing a aftermarket radio I clipped some wires that went into the stock radio one was red with black lines, one was pink one is black. Now the car has issues starting...If I put everything back how it was sometimes it will turn over but gets no gas? If I connect the pink & redw black wire together it will start sometimes & run...I messed up somthing bigtime! When I connect the two wires (red with black & pink) the door light come on as well as the odometer in the cluster?
I decided to unplug the battery overnight & see what happens (putting everything back to how it started)? PLEASE HELP!!! What can I do to fix this issue?
I decided to unplug the battery overnight & see what happens (putting everything back to how it started)? PLEASE HELP!!! What can I do to fix this issue?
Drifting
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Not really, there is two vats systems. One that keeps it from starting and anthor in the computer that shuts it off the injectors. When the latter has a problem you'll see the cars cranking but shuttnig right back off.
LS/MFT
Joined: Jun 2000
Posts: 5,874
Likes: 0
From: Cary IL
St. Jude Donor '09-'10-'11-'12
Assuming you removed a Bose unit. You didn't specify if the wires you indicate are the ones coming from the control head or the reciever box, but based on your observation that connecting the pink and red/blk wires will allow the engine to start, here's my guess:
Circuit 1935 from the reciever box is a pink wire. It is Ignition Out and connects at connector C2, terminal 8 to the Ignition In of the control head (wht wire). Circuit 1902 is Battery In (hot at all times) from the main fuse block. Connects at C1 to a red wire into the control head. You probably tried to by-pass the reciever box when you installed the new radio. Without this, the ignition input thru the reciever box is shorted.
Circuit 1935 from the reciever box is a pink wire. It is Ignition Out and connects at connector C2, terminal 8 to the Ignition In of the control head (wht wire). Circuit 1902 is Battery In (hot at all times) from the main fuse block. Connects at C1 to a red wire into the control head. You probably tried to by-pass the reciever box when you installed the new radio. Without this, the ignition input thru the reciever box is shorted.
Thread Starter
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Originally Posted by Vette73
Assuming you removed a Bose unit. You didn't specify if the wires you indicate are the ones coming from the control head or the reciever box, but based on your observation that connecting the pink and red/blk wires will allow the engine to start, here's my guess:
Circuit 1935 from the reciever box is a pink wire. It is Ignition Out and connects at connector C2, terminal 8 to the Ignition In of the control head (wht wire). Circuit 1902 is Battery In (hot at all times) from the main fuse block. Connects at C1 to a red wire into the control head. You probably tried to by-pass the reciever box when you installed the new radio. Without this, the ignition input thru the reciever box is shorted.
Circuit 1935 from the reciever box is a pink wire. It is Ignition Out and connects at connector C2, terminal 8 to the Ignition In of the control head (wht wire). Circuit 1902 is Battery In (hot at all times) from the main fuse block. Connects at C1 to a red wire into the control head. You probably tried to by-pass the reciever box when you installed the new radio. Without this, the ignition input thru the reciever box is shorted.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Originally Posted by Alvin
Not really, there is two vats systems. One that keeps it from starting and anthor in the computer that shuts it off the injectors. When the latter has a problem you'll see the cars cranking but shuttnig right back off.
LS/MFT
Joined: Jun 2000
Posts: 5,874
Likes: 0
From: Cary IL
St. Jude Donor '09-'10-'11-'12
Sorry man, I'm pretty good at following the Service Manual to fix 'em if they are stock, but modifying the electrical system is something I leave to the "experts". I'd suggest that you get your hands on the Service Manual section 8A -- the electrical suppliment. If you drop me an email I might be able to send you scanned *.jpg's of the pertainent pages.
Jac
Jac
Thread Starter
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Originally Posted by Vette73
Sorry man, I'm pretty good at following the Service Manual to fix 'em if they are stock, but modifying the electrical system is something I leave to the "experts". I'd suggest that you get your hands on the Service Manual section 8A -- the electrical suppliment. If you drop me an email I might be able to send you scanned *.jpg's of the pertainent pages.
Jac
Jac
Thread Starter
Safety Car
Joined: Sep 2001
Posts: 4,095
Likes: 1
From: modland CT
Originally Posted by chucks88
Glad I could help. Headin to heavenly tonight?
