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where does that wire...go..?

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Old Sep 19, 2017 | 06:20 PM
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Default where does that wire...go..?

in the shop is a 77 late prod..under the hood is an.."orange.."hot"..all the time wire...coming out of drive side wire harness...what does it go to...??
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Old Sep 19, 2017 | 07:13 PM
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Possibly it is the possible alarm switch that is located in the left fender. 1977 Corvettes had them in the fender and then GM moved this switch to the left door lock cylinder.

Without a photo...describing it does no good.

Below is a photo of some car I found on the web that has the lock cylinder switch in the left fender by the crossflag emblem.



DUB
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Old Sep 19, 2017 | 08:08 PM
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Hey...Dub...this 77 is a ...late one...alarm switch is in the...door lock...here is a..pic...the ..orange wire meets with the..yellow, at harness,...Dub..thanx for the..quick..replr

that goes to ..alarm horn...just cant find where to put the...orange one...
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Old Sep 19, 2017 | 08:48 PM
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I have the same wire hanging loose on my 78 and i thought it was to the horn but i dont see were it would connect.
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Old Sep 19, 2017 | 08:59 PM
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Originally Posted by samuel082799
I have the same wire hanging loose on my 78 and i thought it was to the horn but i dont see were it would connect.
yes...sam....cant find that wire on any wire diagrams...hmmm
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Old Sep 19, 2017 | 09:01 PM
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Originally Posted by jack mac
yes...sam....cant find that wire on any wire diagrams...hmmm
yours has a connector on it mine is just a cut wire, also my horn doesn't work if that helps.
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Old Sep 19, 2017 | 09:06 PM
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man...this vette has ..every single option..except pwr locks and rear defrost...and it all works....i hate ..wires like this...just have a ..need..to know what the ..heck is it for......
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Old Sep 19, 2017 | 09:08 PM
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Originally Posted by jack mac
man...this vette has ..every single option..except pwr locks and rear defrost...and it all works....i hate ..wires like this...just have a ..need..to know what the ..heck is it for......
I have a pace car so it is fully loaded and the only things that dont work on it is the horn and wiper fluid pump, and my alarm so i'm assuming the wire is for one of those or it is just not important
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Old Sep 19, 2017 | 09:14 PM
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well it is.."hot"..all the time...so it would be a..feed..for something...man..it is buggin me...and ..God forbid the..customer should ask what it is for...I have..no answer...akkk
hey...Sam...question...does your Vette still have the original door weatherstrips on it??
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Old Sep 19, 2017 | 09:17 PM
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Originally Posted by jack mac
well it is.."hot"..all the time...so it would be a..feed..for something...man..it is buggin me...and ..God forbid the..customer should ask what it is for...I have..no answer...akkk
hey...Sam...question...does your Vette still have the original door weatherstrips on it??
I have new weather striping all around.
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Old Sep 19, 2017 | 09:22 PM
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Originally Posted by jack mac
yes...sam....cant find that wire on any wire diagrams...hmmm
Check your alarm horn on the firewall drivers side. The orange wire should attach directly to horn, yellow wire should have a ring style connector with the mounting bolt going through it.
I also have a late 77.
Brian
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Old Sep 19, 2017 | 09:28 PM
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Originally Posted by bmotojoe
Check your alarm horn on the firewall drivers side. The orange wire should attach directly to horn, yellow wire should have a ring style connector with the mounting bolt going through it.
I also have a late 77.
Brian
Im out of town right now but as far as i can remember their are no wires connecting to my horn and the only wire in the general area is that cut orange one. It could possibly go to a sensor and they disconnected it because the sensor was bad and it was causing something to go wrong. That is what happened to my brake proportioning valve.
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Old Sep 19, 2017 | 09:32 PM
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this car was missing them...so i got em from...soffseal...look at this pic....see the hole..in the upper drive door....seems the new weatherstrip..is not the same as original??
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Old Sep 19, 2017 | 09:35 PM
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Originally Posted by bmotojoe
Check your alarm horn on the firewall drivers side. The orange wire should attach directly to horn, yellow wire should have a ring style connector with the mounting bolt going through it.
I also have a late 77.
Brian
Brian...yellow wire is the ..alert..wire to set off the horn...when the alarm triggers...and it is ..plugged into the horn...the orange is...HOT..if i plug that to the horn..it..will..blow...forever...
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Old Sep 19, 2017 | 09:36 PM
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Late 77 right side diagram.


Yes yellow wire is the pulse signal from the alarm anti theft flasher relay.

If wired like the diagram, The only way the alarm sounds if these conditions are made. Now if the alarm is set and the horn just blows and does not pulse, then the anti alarm flasher relay is bad.

Last edited by bmotojoe; Sep 19, 2017 at 09:47 PM.
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Old Sep 19, 2017 | 09:47 PM
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bmoto...you are...THE...man....thanx very much...nice diagram...better than mine...the alarm horn has 2 connections...I SEE!...but i cannot see where the ..orange goes...I will reconnect it...by braille...ha
hey bmoto..can ya look at the drive door weatherstrip i put on...didnt have the originals...but that extra hole..bugs me....this was a repaint and i can see by the tapemark that the original paint line does not match the...new..weatherstrip??
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Old Sep 19, 2017 | 09:55 PM
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Mine has the original weatherstrip and yes that hole is open like yours.
The original alarm horn only had one connector, yours may be a replacement.

Last edited by bmotojoe; Sep 19, 2017 at 09:58 PM.
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Old Sep 19, 2017 | 09:59 PM
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Originally Posted by bmotojoe
Check your alarm horn on the firewall drivers side. The orange wire should attach directly to horn, yellow wire should have a ring style connector with the mounting bolt going through it.
I also have a late 77.
Brian
OK I get it...there are 2 terminals on the...alarm horn
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Old Sep 19, 2017 | 10:05 PM
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Originally Posted by bmotojoe
Mine has the original weatherstrip and yes that hole is open like yours.
The original alarm horn only had one connector, yours may be a replacement.
Thanx...any way you could possibly send a pic of your drive door...like the one I posted?
Now I know what to do with that wire!
hey where did you get that ...wire diagram...
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Old Sep 19, 2017 | 10:10 PM
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Originally Posted by samuel082799
Im out of town right now but as far as i can remember their are no wires connecting to my horn and the only wire in the general area is that cut orange one. It could possibly go to a sensor and they disconnected it because the sensor was bad and it was causing something to go wrong. That is what happened to my brake proportioning valve.
Dude ...am I reading this...rite...you..cut off..the brake warn wire from your brake system?
Cause the brake warn lite was on??
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