Is this a? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Factory Guy** · 03-30-2023, 08:21 PM

It this just a 12v bus bar on the square bodies?

It appears a previous owner ran a 12v + wire from this bus bar to the 7 pin trailer plug in the back of the truck? Ideas on why they did this?

They ran the red wire with the white fusible link in it. (yellow arrow).

RustyPile · 03-31-2023, 04:28 AM

If the arrow is referencing that red wire at the top of the stack, that's not a fusible link. Those white cylindrical shaped objects are inline fuse holders. There's a common glass fuse inside.. As for the wire going to the 7 pin plug at the rear -- it's anybody's guess, but it could be to provide constant power source on a trailer..

**mongocanfly** · 03-31-2023, 08:52 AM

could have been hooked to a camper that usues 12v batterys, driving would help keep them charged....Dad had a popup camper that was wired in a similar fashion

**Factory Guy** · 03-31-2023, 10:05 AM

Quote:

Originally Posted by RustyPile

If the arrow is referencing that red wire at the top of the stack, that's not a fusible link. Those white cylindrical shaped objects are inline fuse holders. There's a common glass fuse inside.. As for the wire going to the 7 pin plug at the rear -- it's anybody's guess, but it could be to provide constant power source on a trailer..

My error I thought those were fusible link wires.

**Factory Guy** · 03-31-2023, 10:07 AM

Quote:

Originally Posted by mongocanfly

could have been hooked to a camper that usues 12v batterys, driving would help keep them charged....Dad had a popup camper that was wired in a similar fashion

Thanks you, pretty much confirmed what I suspected. Just kinda strange...

**biketopia** · 03-31-2023, 01:28 PM

Pretty common for one pin on a 7 way RV connector to be constant power.

RustyPile · 03-31-2023, 02:06 PM

Quote:

Originally Posted by Factory Guy

My error I thought those were fusible link wires.

Here's a link to a typical fusible link..

https://www.4statetrucks.com/air-ele...ent=Ad%20group

A fusible link is a wire made of a special alloy that melts in to when overheated.. The link is typically a gauge or two smaller than the wire it's protecting.

Dead Parrot · 03-31-2023, 03:17 PM

The black wire toward the bottom that runs into the cylinder looks like a factory fusible link. The wire on the other side of the cylinder should be larger.

**Factory Guy** · 04-01-2023, 07:35 PM

Quote:

Originally Posted by biketopia

Pretty common for one pin on a 7 way RV connector to be constant power.

Thank you, I DID NOT know that.

03-30-2023, 08:21 PM	#1
Factory Guy Senior Member Join Date: Jun 2019 Location: Midway USA Kentucky Posts: 540	Is this a? It this just a 12v bus bar on the square bodies? It appears a previous owner ran a 12v + wire from this bus bar to the 7 pin trailer plug in the back of the truck? Ideas on why they did this? They ran the red wire with the white fusible link in it. (yellow arrow). Attached Images __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=791250

03-31-2023, 04:28 AM	#2
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 1,531	Re: Is this a? If the arrow is referencing that red wire at the top of the stack, that's not a fusible link. Those white cylindrical shaped objects are inline fuse holders. There's a common glass fuse inside.. As for the wire going to the 7 pin plug at the rear -- it's anybody's guess, but it could be to provide constant power source on a trailer..

03-31-2023, 08:52 AM	#3
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,583	Re: Is this a? could have been hooked to a camper that usues 12v batterys, driving would help keep them charged....Dad had a popup camper that was wired in a similar fashion __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

03-31-2023, 01:28 PM	#6
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,008	Re: Is this a? Pretty common for one pin on a 7 way RV connector to be constant power. __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350

03-31-2023, 03:17 PM	#8
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,477	Re: Is this a? The black wire toward the bottom that runs into the cylinder looks like a factory fusible link. The wire on the other side of the cylinder should be larger.



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