Help Me Identify This Part - Hint: It was under the dash - The 1947 - Present Chevrolet & GMC Truck Message Board Network

es67chevy · 02-28-2011, 11:51 AM

OK folks. Time for another round of "Identify my part". Found this attached to the firewall with nothing plugged into it. Can you tell me what it is?

DeputyDan · 02-28-2011, 11:55 AM

Is that the horn relay? When I replaced my horn that is what mine looked like. If you dont have a horn and you push the horn button you will hear it click.

Transformula · 02-28-2011, 11:55 AM

Looks like a horn relay.

es67chevy · 02-28-2011, 12:01 PM

Man, that was fast. Much appreciated, fellas. Now, I just need to figure out how to hook it up.

c10/72 · 02-28-2011, 12:34 PM

Thats a horn relay...had the same one on mine...still have just no horns!

ChevLoRay · 02-28-2011, 01:31 PM

It's electrical....

Tkmadone · 02-28-2011, 02:22 PM

Looks like the heater/AC fan high speed relay to me.

Longhorn Man · 02-28-2011, 05:27 PM

if it was on the drivers side, then it is for the horn. Look for a 3 wire plug hanging there, red green and black if not mistaken.
If on the passenger side, then it is the high speed blower relay.

dmack91 · 02-28-2011, 10:04 PM

Just hooked mine up last weekend. It isn't attached to the firewall, but hanging right beside the steering column near the firewall. Horn relay.

The heavy green wire should come out between the driver's side headlight and radiator (mine had been cut off near where it came out of the harness there).

No horn when I got it, but that relay was hooked up and you could hear/feel it clunk when hitting the horn button.

**mr48chev** · 02-28-2011, 10:41 PM

If you found it slightly above and to the left of the steering column it is the horn relay. If it was unhooked I'd think that either it stuck, the horn button or wire to it is stuck or shorted or the horn stuck on.

48richard · 03-01-2011, 07:08 PM

Another possibility is the anti-dieseling relay, if you have A/C. This goes to the right of the A/C controller, with orange, pink, and green wires

es67chevy · 03-01-2011, 11:55 PM

We didn't have a working horn when we bought it and it is not an A/C truck so I'm leaning towards horn relay. And I don't think we will need it for our build because we're using a Painless Wiring setup that doesn't appear to use a relay (Someone correct me if I'm wrong here).

I knew I should have documented where we took it off from. I'm pretty sure it was to the left of the steering column. I'll try to find some pics of the firewall that we've taken and see if I can identify where it was mounted.

Thanks all!!

tcb-1 · 03-02-2011, 12:03 AM

a thingamabob

es67chevy · 03-02-2011, 12:43 AM

Quote:

Originally Posted by tcb-1

a thingamabob

Hahaha. I have a lot of 'those' left over from this build. Plus a few missing thingamabobs.

**VetteVet** · 03-02-2011, 02:35 AM

Here's a couple of locations.

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wwotr · 03-02-2011, 02:50 AM

Quote:

Originally Posted by es67chevy

OK folks. Time for another round of "Identify my part". Found this attached to the firewall with nothing plugged into it. Can you tell me what it is?

I remember mine went bad in the middle of the night.
Like 2AM!
Horn started BLARING!
I went out in my pj's and yanked the spade connector off the Horn.
"That'll fix it"...I said to myself.
Next morning I had a Dead Battery.
(come on guys, it was 2 in the morning , out of a DEAD SLEEP)!

es67chevy · 03-02-2011, 12:59 PM

Quote:

Originally Posted by wwotr

I remember mine went bad in the middle of the night.
Like 2AM!
Horn started BLARING!
I went out in my pj's and yanked the spade connector off the Horn.
"That'll fix it"...I said to myself.
Next morning I had a Dead Battery.
(come on guys, it was 2 in the morning , out of a DEAD SLEEP)!

Man, that would suck!! I'd have probably pulled the horn right off its mounting point and chunked it across the garage!!!

es67chevy · 03-02-2011, 12:58 PM

Thanks, VetteVet. Those pictures helped me find the ones we needed that I took. I obviously wasn't focusing on this piece, but I can clearly see it plugged into my old rat's nest of a wiring harness. The truck just never had a horn so didn't realize this is what that was for. Plus, these pics were taken over two years ago so the memory is a little fuzzy!

02-28-2011, 11:51 AM	#1
es67chevy Registered User Join Date: Aug 2007 Location: Bella Vista, AR Posts: 1,107	Help Me Identify This Part - Hint: It was under the dash OK folks. Time for another round of "Identify my part". Found this attached to the firewall with nothing plugged into it. Can you tell me what it is? __________________ Eric 1967 C10 SWB 383 Stroker/TH400 Brother's One Piece Power Windows Shaved Doors, Markers, and Bumpers 4/6 Early Classic Drop Rear Fuel Tank (49-52 Chevy Car Tank) Surf Blue Paint Bella Vista, AR (Arkansas for those that get the 'A' states mixed up) My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=330869 Last edited by es67chevy; 02-28-2011 at 11:53 AM.

02-28-2011, 11:55 AM	#2
DeputyDan Registered User Join Date: Oct 2010 Location: Missouri Posts: 165	Re: Help Me Identify This Part - Hint: It was under the dash Is that the horn relay? When I replaced my horn that is what mine looked like. If you dont have a horn and you push the horn button you will hear it click.

02-28-2011, 11:55 AM	#3
Transformula Registered User Join Date: Nov 2010 Location: Las Vegas, Nevada Posts: 160	Re: Help Me Identify This Part - Hint: It was under the dash Looks like a horn relay. __________________ T.Y.N Custom Works..... Because "Stock" Sucks! 1971 K 10 GMC Long Bed 1977 Formula T/A Frame off Resto-Mod 1995 FXDL Harley Low Rider 1985 C10 ShortWide 91 Burb front.

02-28-2011, 12:01 PM	#4
es67chevy Registered User Join Date: Aug 2007 Location: Bella Vista, AR Posts: 1,107	Re: Help Me Identify This Part - Hint: It was under the dash Man, that was fast. Much appreciated, fellas. Now, I just need to figure out how to hook it up. __________________ Eric 1967 C10 SWB 383 Stroker/TH400 Brother's One Piece Power Windows Shaved Doors, Markers, and Bumpers 4/6 Early Classic Drop Rear Fuel Tank (49-52 Chevy Car Tank) Surf Blue Paint Bella Vista, AR (Arkansas for those that get the 'A' states mixed up) My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=330869

02-28-2011, 12:34 PM	#5
c10/72 Registered User Join Date: Jun 2009 Location: Clovis, NM Posts: 114	Re: Help Me Identify This Part - Hint: It was under the dash Thats a horn relay...had the same one on mine...still have just no horns!

02-28-2011, 01:31 PM	#6
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Help Me Identify This Part - Hint: It was under the dash It's electrical.... __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

02-28-2011, 02:22 PM	#7
Tkmadone Registered User Join Date: Aug 2009 Location: Simi Valley, CA Posts: 193	Re: Help Me Identify This Part - Hint: It was under the dash Looks like the heater/AC fan high speed relay to me.

02-28-2011, 05:27 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Help Me Identify This Part - Hint: It was under the dash if it was on the drivers side, then it is for the horn. Look for a 3 wire plug hanging there, red green and black if not mistaken. If on the passenger side, then it is the high speed blower relay.

02-28-2011, 10:04 PM	#9
dmack91 Registered User Join Date: Jan 2011 Location: Redmond, OR Posts: 761	Re: Help Me Identify This Part - Hint: It was under the dash Just hooked mine up last weekend. It isn't attached to the firewall, but hanging right beside the steering column near the firewall. Horn relay. The heavy green wire should come out between the driver's side headlight and radiator (mine had been cut off near where it came out of the harness there). No horn when I got it, but that relay was hooked up and you could hear/feel it clunk when hitting the horn button. __________________ 68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress

02-28-2011, 10:41 PM	#10
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,651	Re: Help Me Identify This Part - Hint: It was under the dash If you found it slightly above and to the left of the steering column it is the horn relay. If it was unhooked I'd think that either it stuck, the horn button or wire to it is stuck or shorted or the horn stuck on.

03-01-2011, 07:08 PM	#11
48richard Registered User Join Date: Oct 2009 Location: Phoenix, AZ Posts: 475	Re: Help Me Identify This Part - Hint: It was under the dash Another possibility is the anti-dieseling relay, if you have A/C. This goes to the right of the A/C controller, with orange, pink, and green wires __________________ 1971 C10 Longbed, 350/TH350

03-01-2011, 11:55 PM	#12
es67chevy Registered User Join Date: Aug 2007 Location: Bella Vista, AR Posts: 1,107	Re: Help Me Identify This Part - Hint: It was under the dash We didn't have a working horn when we bought it and it is not an A/C truck so I'm leaning towards horn relay. And I don't think we will need it for our build because we're using a Painless Wiring setup that doesn't appear to use a relay (Someone correct me if I'm wrong here). I knew I should have documented where we took it off from. I'm pretty sure it was to the left of the steering column. I'll try to find some pics of the firewall that we've taken and see if I can identify where it was mounted. Thanks all!! __________________ Eric 1967 C10 SWB 383 Stroker/TH400 Brother's One Piece Power Windows Shaved Doors, Markers, and Bumpers 4/6 Early Classic Drop Rear Fuel Tank (49-52 Chevy Car Tank) Surf Blue Paint Bella Vista, AR (Arkansas for those that get the 'A' states mixed up) My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=330869 Last edited by es67chevy; 03-02-2011 at 12:00 AM.

03-02-2011, 12:03 AM	#13
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Help Me Identify This Part - Hint: It was under the dash a thingamabob __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

03-02-2011, 02:35 AM	#15
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: Help Me Identify This Part - Hint: It was under the dash Here's a couple of locations. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

03-02-2011, 12:58 PM	#18
es67chevy Registered User Join Date: Aug 2007 Location: Bella Vista, AR Posts: 1,107	Re: Help Me Identify This Part - Hint: It was under the dash Thanks, VetteVet. Those pictures helped me find the ones we needed that I took. I obviously wasn't focusing on this piece, but I can clearly see it plugged into my old rat's nest of a wiring harness. The truck just never had a horn so didn't realize this is what that was for. Plus, these pics were taken over two years ago so the memory is a little fuzzy! __________________ Eric 1967 C10 SWB 383 Stroker/TH400 Brother's One Piece Power Windows Shaved Doors, Markers, and Bumpers 4/6 Early Classic Drop Rear Fuel Tank (49-52 Chevy Car Tank) Surf Blue Paint Bella Vista, AR (Arkansas for those that get the 'A' states mixed up) My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=330869



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