Rear bed support wire harness grommet? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 08-16-2020, 03:22 PM

Anyone know where to get one? I'm unable to locate one, perhaps using the wrong name.

Thanks

**Grumpy old man** · 08-16-2020, 04:13 PM

That's just a generic aftermarket firewall grommet someone used after cutting the original harness probably to wire for trailer lights . The original harness has the pass thru grommet built into the harness itself .

**71CHEVYSHORTBED402** · 08-16-2020, 05:48 PM

Quote:

Originally Posted by Grumpy old man

That's just a generic aftermarket firewall grommet someone used after cutting the original harness probably to wire for trailer lights . The original harness has the pass thru grommet built into the harness itself .

Agree with your rear harness boot, it runs through the rear cross member.

The rear harness runs from the boot connection through this grommet before it distributes to the L & R side. Both my truck have/had the grommet per the OP. Not to say you're wrong.

It's a split grommet, so can probably cut something fit. The old one off my C10 is decent enough, the picture is my C20.

There are similar holes that run into the passages L & R side. Neither of my trucks had a grommet on either side, though split grommets or? would be an option.

**DeadheadNM** · 08-16-2020, 05:48 PM

I think that’s oem for the rear lamp harness and I’d like two myself.

Ramiro0727 · 08-17-2020, 09:56 AM

71Chevyshortbed402,

I took off the original one that was in bad shape and Made a new on using trailer wire. I copied the one I took off. Used the original connector so I can still plug it in.

Ramiro

**71CHEVYSHORTBED402** · 08-17-2020, 03:54 PM

Quote:

Originally Posted by DeadheadNM

I think that’s oem for the rear lamp harness and I’d like two myself.

Here are the measurements. This one came off my C10, it's still nice after all these years, though new might be more betta.

On a side, I mentioned a hole in the rear bed support for the passages up to each side of the rear lights - the holes in the panels are not 1". I don't believe GM installed grommets there, so the wires rub the panel if not accounted for.

May work. The groove may lean a little thin, but the panel for the rear cross brace is approx. 1/16".

https://www.amazon.com/Rubber-Gromme...15&s=hi&sr=1-3

https://www.amazon.com/Rubber-Gromme...32&s=hi&sr=1-2

**FirstOwner69** · 08-17-2020, 04:14 PM

Some leads...

Corvette Central Search (no dimensions though):
https://www.corvettecentral.com/c1-5...t%26count%3d18

Corvette Central Examples:
https://www.corvettecentral.com/c3-6...%26q%3dgrommet

https://www.corvettecentral.com/c1-5...t%26count%3d18

Grainger Supply Search:
https://www.grainger.com/search/raw-...ubber+grommets

**71CHEVYSHORTBED402** · 08-17-2020, 04:51 PM

I just bought 10 grommets for cheap. Don't know the panel size, but they look right, and the ID & OD are correct. Will send some to Deadhead and ? if they work.

**DeadheadNM** · 08-17-2020, 09:04 PM

Nice! Dying to know if these fit. Thanks.

**71CHEVYSHORTBED402** · 08-20-2020, 05:05 PM

Quote:

Originally Posted by DeadheadNM

Nice! Dying to know if these fit. Thanks.

Made in China 55050-K. Cut a slit and like new. Except my bed maybe

- the underneath is a rough finish - I'll get one on eventually. If you want PM your address I'll send what you need.

Ramiro0727 · 08-21-2020, 09:35 AM

Quote:

Originally Posted by 71CHEVYSHORTBED402

Made in China 55050-K. Cut a slit and like new. Except my bed maybe

- the underneath is a rough finish - I'll get one on eventually. If you want PM your address I'll send what you need.

71Chevyshortbed402,

Where did u purchase them? I want to replace mine before I install the wiring harness I made for the rear lights.

Thanks,
Ramiro

**71CHEVYSHORTBED402** · 08-22-2020, 11:39 AM

Quote:

Originally Posted by Ramiro0727

71Chevyshortbed402,

Where did u purchase them? I want to replace mine before I install the wiring harness I made for the rear lights.

Thanks,
Ramiro

Ebay. If you like PM your address I'll send one.

54blackhornet · 08-22-2020, 02:01 PM

Amazing the generosity of folks on this site.

Ramiro0727 · 08-24-2020, 05:59 PM

Quote:

Originally Posted by 71CHEVYSHORTBED402

Ebay. If you like PM your address I'll send one.

Thanks 71Chevyshortbed. I'll pm u my address.

Thanks,
Ramiro

**DeadheadNM** · 08-20-2020, 08:38 PM

Tony thank you! PM sent. Good info here.

**mr48chev** · 08-24-2020, 06:35 PM

I'd have to look but think that size might be in the box of grommets I bought from Summit a while back.

Summit part number Sum-890090 https://www.summitracing.com/parts/sum-890090

Usually you can find individual ones in the pull out trays above the bolts at better stocked Ace hardware stores though .

**DeadheadNM** · 02-07-2021, 10:51 AM

Think I found some NOS examples. “RTR” is molded on the rubber.

**pjmoreland** · 02-07-2021, 12:10 PM

GMCPauls sells that grommet.

https://gmcpauls.com/Electrical.htm

**DeadheadNM** · 02-07-2021, 12:41 PM

Good deal thanks for posting.

Andy4639 · 02-07-2021, 03:32 PM

I have no idea if the right sizes is in the box but I bought a box with about 8 different sizes @ Lowes the other week. I saw them in the wiring section and figured they would be good to have. Just in case.

https://www.lowes.com/pd/Gardner-Ben...mmet/999954302

08-16-2020, 03:22 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,291	Rear bed support wire harness grommet? Anyone know where to get one? I'm unable to locate one, perhaps using the wrong name. Thanks Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

08-16-2020, 04:13 PM	#2
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Rear bed support wire harness grommet? That's just a generic aftermarket firewall grommet someone used after cutting the original harness probably to wire for trailer lights . The original harness has the pass thru grommet built into the harness itself . Attached Images __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

08-16-2020, 05:48 PM	#4
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Rear bed support wire harness grommet? I think that’s oem for the rear lamp harness and I’d like two myself. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

08-17-2020, 09:56 AM	#5
Ramiro0727 Registered User Join Date: Oct 2016 Location: Porterville, CA Posts: 222	Re: Rear bed support wire harness grommet? 71Chevyshortbed402, I took off the original one that was in bad shape and Made a new on using trailer wire. I copied the one I took off. Used the original connector so I can still plug it in. Ramiro Attached Images

08-17-2020, 04:14 PM	#7
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,846	Re: Rear bed support wire harness grommet? Some leads... Corvette Central Search (no dimensions though): https://www.corvettecentral.com/c1-5...t%26count%3d18 Corvette Central Examples: https://www.corvettecentral.com/c3-6...%26q%3dgrommet https://www.corvettecentral.com/c1-5...t%26count%3d18 Grainger Supply Search: https://www.grainger.com/search/raw-...ubber+grommets __________________ Jim

08-17-2020, 04:51 PM	#8
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,291	Re: Rear bed support wire harness grommet? I just bought 10 grommets for cheap. Don't know the panel size, but they look right, and the ID & OD are correct. Will send some to Deadhead and ? if they work. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

08-17-2020, 09:04 PM	#9
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Rear bed support wire harness grommet? Nice! Dying to know if these fit. Thanks. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

08-22-2020, 02:01 PM	#13
54blackhornet Registered User Join Date: Jul 2008 Location: Eastern Oregon Posts: 2,382	Re: Rear bed support wire harness grommet? Amazing the generosity of folks on this site. __________________ 71 C-20 07 Magnum RT AWD

08-20-2020, 08:38 PM	#15
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Rear bed support wire harness grommet? Tony thank you! PM sent. Good info here. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

08-24-2020, 06:35 PM	#16
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,632	Re: Rear bed support wire harness grommet? I'd have to look but think that size might be in the box of grommets I bought from Summit a while back. Summit part number Sum-890090 https://www.summitracing.com/parts/sum-890090 Usually you can find individual ones in the pull out trays above the bolts at better stocked Ace hardware stores though . Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. Last edited by mr48chev; 08-24-2020 at 07:03 PM.

02-07-2021, 10:51 AM	#17
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Rear bed support wire harness grommet? Think I found some NOS examples. “RTR” is molded on the rubber. Attached Images __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

02-07-2021, 12:10 PM	#18
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,755	Re: Rear bed support wire harness grommet? GMCPauls sells that grommet. https://gmcpauls.com/Electrical.htm Attached Images

02-07-2021, 12:41 PM	#19
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,422	Re: Rear bed support wire harness grommet? Good deal thanks for posting. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

02-07-2021, 03:32 PM	#20
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Rear bed support wire harness grommet? I have no idea if the right sizes is in the box but I bought a box with about 8 different sizes @ Lowes the other week. I saw them in the wiring section and figured they would be good to have. Just in case. https://www.lowes.com/pd/Gardner-Ben...mmet/999954302 __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.