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Topic: Using Left Turn Signal sometimes triggers horn

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Using Left Turn Signal sometimes triggers horn (1/4)
 9/6/21 3:01am
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

I've had this problem intermittently for the last year or so.  When I installed my Borgeson steering box I forgot to install the ground strap between the two halves of the new rag joint which I thought was causing the problem.  I remedied that error recently, but today was driving, used left turn signal to make a full 90 degree left turn and as I was doing that horn sounded and kept intermittently sounding.  I could sort of modulate it by adjusting the turn signal lever, but I ended up stopping and shutting engine off.  Was going to pull the horn's fuse, but couldn't remember which fuse goes to horn and it was night so I just drove home and didn't use turn signals at all.  No issues, but I won't drive it again till I resolve.  

I know I'll have to pull the wheel off and see what's going on in there, but was just curious if anyone has experienced anything similar and/or has any guesses as to what parts I'll need.  I'm thinking turn signal switch is going to get replaced for sure - it can be finicky at times with the canceling feature not always working right.  



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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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Re: Using Left Turn Signal sometimes triggers horn (2/4)
 9/6/21 8:48am
BillHanna
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Cana, VA - USA

Vette(s):
1975 Stingray 71 350 engine Flat top pistons Sniper fuel injection Hyperspark ignition Vintage Air air conditioning Borgeson power steering box


Joined: 7/3/2016
Posts: 266

I just installed a new steering column (Chinese import), and it did the same thing.  It was a defective turn signal switch in the steering column.  I had replaced one in the stock (non-tilt) steering column on my '75, which was not too bad a change -- the wired ran straight through and there was enough room for the flat plug to fit as well.  But on this new column the wire harness takes a confulated path and there was not enough room for the flat plug to fit, so I had to cut it off and resolder the contacts when it was all together.

When you pull the original turn signal switch, make sure you tie a sturdy string to the wires so you can pull the new one back through.  Mine got cut on the new column and I had a miserable time fishing another one through.



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Re: Using Left Turn Signal sometimes triggers horn (3/4)
 9/6/21 2:02pm
daveo76
Standard Member
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

BillHanna said:

I just installed a new steering column (Chinese import), and it did the same thing.  It was a defective turn signal switch in the steering column.  I had replaced one in the stock (non-tilt) steering column on my '75, which was not too bad a change -- the wired ran straight through and there was enough room for the flat plug to fit as well.  But on this new column the wire harness takes a confulated path and there was not enough room for the flat plug to fit, so I had to cut it off and resolder the contacts when it was all together.

When you pull the original turn signal switch, make sure you tie a sturdy string to the wires so you can pull the new one back through.  Mine got cut on the new column and I had a miserable time fishing another one through.

Thank you, Bill.  Going to replace the the turn signal switch and see where that takes me.  




______________

 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
Re: Using Left Turn Signal sometimes triggers horn (4/4)
 9/6/21 2:02pm
daveo76
Standard Member
Send Private Message

Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

BillHanna said:

I just installed a new steering column (Chinese import), and it did the same thing.  It was a defective turn signal switch in the steering column.  I had replaced one in the stock (non-tilt) steering column on my '75, which was not too bad a change -- the wired ran straight through and there was enough room for the flat plug to fit as well.  But on this new column the wire harness takes a confulated path and there was not enough room for the flat plug to fit, so I had to cut it off and resolder the contacts when it was all together.

When you pull the original turn signal switch, make sure you tie a sturdy string to the wires so you can pull the new one back through.  Mine got cut on the new column and I had a miserable time fishing another one through.

Thank you, Bill.  Going to replace the the turn signal switch and see where that takes me.  




______________

 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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