Need help identiying wire on '81 Chevy Silverado - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mhoflin · 09-01-2018, 02:04 PM

I have a 1981 Chevy Silverado C10 and I am trying to restore as much as possible. I cannot figure out what a shielded wire I found on the passenger side of engine compartment goes to. It does not have a typical connector on the end, it seems to be some sort of "metal block" and it runs down the passenger side but I cannot determine what it is.

As I stated before it is shielded, kind of like a "coax" but smaller. I really need some help here. Does anyone know of this wire and where it connects to?

Thanks so much!

geezer#99 · 09-01-2018, 04:08 PM

Wild guess!
Does it look like this?

https://www.opgi.com/gto/27437/

mhoflin · 09-01-2018, 04:21 PM

Nope, it looks almost like a small coax with a block type end. I have no idea.

geezer#99 · 09-01-2018, 05:26 PM

Take a pic!

Danmcg · 09-02-2018, 03:08 AM

Antenna wire? CB?

**Palf70Step** · 09-02-2018, 07:53 AM

Wire that connects the in-windshield radio antenna to the radio?

100%Chevy · 09-02-2018, 10:12 AM

Knock sensor?
Or ,it could go to the air filter housing.
A picture would really help.
Mike.

mhoflin · 09-03-2018, 06:17 PM

Well here are some pics. Since it is a 1981 I don't think it is a knock sensor...

74CustomK20 · 09-04-2018, 10:06 PM

Looks like something to the ac compressor?

mhoflin · 09-05-2018, 05:19 PM

Sorry but the AC Compressor is on the other side of engine compartment. This wire seems to be routed to the Passenger side lower region. At least that is where it is now, running along the main harness on the Passenger side.
Also, the whitish colored part actually is movable. It can be positioned in different angles etc.

Thanks for all the help so far.

geezer#99 · 09-05-2018, 08:37 PM

Another wild guess!
Circulating block heater!
That might be the plug for it.

mhoflin · 09-06-2018, 06:26 PM

Found out, you are right, it was for a circulating block heater. Thanks all!

09-01-2018, 02:04 PM	#1
mhoflin Registered User Join Date: Aug 2018 Location: Billings Posts: 20	Need help identiying wire on '81 Chevy Silverado I have a 1981 Chevy Silverado C10 and I am trying to restore as much as possible. I cannot figure out what a shielded wire I found on the passenger side of engine compartment goes to. It does not have a typical connector on the end, it seems to be some sort of "metal block" and it runs down the passenger side but I cannot determine what it is. As I stated before it is shielded, kind of like a "coax" but smaller. I really need some help here. Does anyone know of this wire and where it connects to? Thanks so much! __________________ Thank you and God Bless you, Marc SGT., US Army - Disabled

09-01-2018, 04:08 PM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,541	Re: Need help identiying wire on '81 Chevy Silverado Wild guess! Does it look like this? https://www.opgi.com/gto/27437/

09-01-2018, 04:21 PM	#3
mhoflin Registered User Join Date: Aug 2018 Location: Billings Posts: 20	Re: Need help identiying wire on '81 Chevy Silverado Nope, it looks almost like a small coax with a block type end. I have no idea. __________________ Thank you and God Bless you, Marc SGT., US Army - Disabled

09-01-2018, 05:26 PM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,541	Re: Need help identiying wire on '81 Chevy Silverado Take a pic!

09-02-2018, 03:08 AM	#5
Danmcg Registered User Join Date: Jun 2014 Location: Central NY Posts: 168	Re: Need help identiying wire on '81 Chevy Silverado Antenna wire? CB?

09-02-2018, 07:53 AM	#6
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,761	Re: Need help identiying wire on '81 Chevy Silverado Wire that connects the in-windshield radio antenna to the radio? __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

09-02-2018, 10:12 AM	#7
100%Chevy Registered User Join Date: Jun 2008 Location: Moss Point,Ms. Posts: 1,439	Re: Need help identiying wire on '81 Chevy Silverado Knock sensor? Or ,it could go to the air filter housing. A picture would really help. Mike.

09-03-2018, 06:17 PM	#8
mhoflin Registered User Join Date: Aug 2018 Location: Billings Posts: 20	Re: Need help identiying wire on '81 Chevy Silverado Well here are some pics. Since it is a 1981 I don't think it is a knock sensor... Attached Images __________________ Thank you and God Bless you, Marc SGT., US Army - Disabled

09-04-2018, 10:06 PM	#9
74CustomK20 Registered User Join Date: Oct 2014 Location: Tell City, IN Posts: 637	Re: Need help identiying wire on '81 Chevy Silverado Looks like something to the ac compressor? __________________ Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump.

09-05-2018, 05:19 PM	#10
mhoflin Registered User Join Date: Aug 2018 Location: Billings Posts: 20	Re: Need help identiying wire on '81 Chevy Silverado Sorry but the AC Compressor is on the other side of engine compartment. This wire seems to be routed to the Passenger side lower region. At least that is where it is now, running along the main harness on the Passenger side. Also, the whitish colored part actually is movable. It can be positioned in different angles etc. Thanks for all the help so far. __________________ Thank you and God Bless you, Marc SGT., US Army - Disabled

09-05-2018, 08:37 PM	#11
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,541	Re: Need help identiying wire on '81 Chevy Silverado Another wild guess! Circulating block heater! That might be the plug for it.

09-06-2018, 06:26 PM	#12
mhoflin Registered User Join Date: Aug 2018 Location: Billings Posts: 20	Re: Need help identiying wire on '81 Chevy Silverado Found out, you are right, it was for a circulating block heater. Thanks all! __________________ Thank you and God Bless you, Marc SGT., US Army - Disabled



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