Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

No horn, No trunk button, No power antenna

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Old Jun 16, 2019 | 02:27 PM
  #1  
D Max's Avatar
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Car: 1990 Pontiac Firebird 3.1 V6
Engine: 3.4 V6
Transmission: Automatic
No horn, No trunk button, No power antenna

Hello

Have some electrical problems lately....
Last week, I drove the car back home, with only 1 light up..
At the yearly technical inspection, I seems to have no horn, and it is a couple of months that I need to open the trunk with the key....
Could this all be related to 1 problem?

Today, I've been bizzy to the car...
Checked the fuses => all are good
Tested the horn relay => was ok
Put power directly to the antenna, => it worked
Put power directly to the truck relay => it opens...
Measured the headlamp door motors.... They all seem ok... Afterwards they worked again...

Seems like I get no power on the orange wire at the relay for the antenna, the radio gives 12v on the pink wire when it is on.
Same with the horn.... relay gets no power...

Somebody that can points me in the right direction?

grtz, D
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Old Jun 19, 2019 | 04:04 PM
  #2  
D Max's Avatar
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Junior Member
 
Joined: Nov 2008
Posts: 37
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Car: 1990 Pontiac Firebird 3.1 V6
Engine: 3.4 V6
Transmission: Automatic
Re: No horn, No trunk button, No power antenna

Little update...
Been buzzy today with it..

Dies anybody knows if there is a fusible link somewhere in the orange wire?

Like it is now, the trunk switch is not working, the antenna dies not come out and the Horn is not working...

I have no electrical schematic, so you following wires, I should cut it all up...

When I out 12v on the orange wire at the antenna Relay, zal works fijne

Grtz, D
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Old Jun 20, 2019 | 09:35 PM
  #3  
sonjaab's Avatar
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Joined: Apr 2007
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From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: No horn, No trunk button, No power antenna

FIRST...Check fuse #11 CTSY
Thats the fuse for those non workin accys.
Test for power there.


1-2-3-4
5-6-7-8
9-10-11-12
13-14-15
16-17

Last edited by sonjaab; Jun 20, 2019 at 09:41 PM.
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Old Jun 21, 2019 | 03:40 AM
  #4  
D Max's Avatar
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Junior Member
 
Joined: Nov 2008
Posts: 37
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Car: 1990 Pontiac Firebird 3.1 V6
Engine: 3.4 V6
Transmission: Automatic
Re: No horn, No trunk button, No power antenna

Are there other things that this fuse supply with power?
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Old Jun 21, 2019 | 10:07 AM
  #5  
sonjaab's Avatar
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15 Year Member
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Joined: Apr 2007
Posts: 1,592
Likes: 18
From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: No horn, No trunk button, No power antenna

YES!
(on a 84 but yours should be the same)
#11 20 amp fuse powers
courtesy lamps, dome lamp, rear comp. lamp, clock, horn,
cig lighter, hatch release, power ant.

I would start there first with my test light!
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