Wiring connector for back-up switch - The 1947 - Present Chevrolet & GMC Truck Message Board Network

89AKurt · 03-13-2019, 02:17 PM

I found the wire terminal plug that goes to the back-up switch on the transmission is messed up. When I barely got it inserted onto the terminal, it works. But it falls off too easily. Is there a source for just the terminal plug?

I would show pictures, but Flickr is being stupid at the moment.

**'68OrangeSunshine** · 03-13-2019, 05:38 PM

Quote:

Originally Posted by 89AKurt

I found the wire terminal plug that goes to the back-up switch on the transmission is messed up. When I barely got it inserted onto the terminal, it works. But it falls off too easily. Is there a source for just the terminal plug?

I would show pictures, but Flickr is being stupid at the moment.

Kurt, have you tried bending back one of the terminal prongs, so there's more internal tension on the connector?
Did the plug come into contact with hot exhaust pipes?
Don't know of any vendors carrying Backup Light Switch Plugs for the SM465.
Seems like a junkyard quest, or post a WTB ad.

For pix, I upload my digital camera shots to my laptop, then pull them out of the Pictures file to post. No middleman.

89AKurt · 03-13-2019, 07:24 PM

Quote:

Originally Posted by '68OrangeSunshine

Kurt, [...]
For pix, I upload my digital camera shots to my laptop, then pull them out of the Pictures file to post. No middleman.

I'll look for those scenarios.

Here is a picture. I thought we were limited on digital space for posting pictures. I tend to take a few.

saxart · 03-13-2019, 10:22 PM

Quote:

Originally Posted by 89AKurt

I found the wire terminal plug that goes to the back-up switch on the transmission is messed up. When I barely got it inserted onto the terminal, it works. But it falls off too easily. Is there a source for just the terminal plug?

I would show pictures, but Flickr is being stupid at the moment.

Mine is the same way. I think the plastic has shrunk with age, so it's nearly impossible to get it fully seated. I heated the piece you show in your picture with a hair dryer and it snapped right on. A very thin coating of grease inside the plug also wouldn't hurt. Give it a try...

89AKurt · 03-14-2019, 12:13 AM

Quote:

Originally Posted by saxart

Mine is the same way. I think the plastic has shrunk with age, so it's nearly impossible to get it fully seated. I heated the piece you show in your picture with a hair dryer and it snapped right on. A very thin coating of grease inside the plug also wouldn't hurt. Give it a try...

"Hey neighbor, can I borrow your blow drier?" What for?

If that's what it takes, I'll try it.

**'68OrangeSunshine** · 03-14-2019, 12:29 AM

The system chokes on multiples. There is a limit to 5, but I've been rejected by 2 or 3 sometimes. Often I get some gibberish about 'Security tokens.'' If I wait or cut down the number of pix, it posts.

Funny, LMC sells the Backup Light Switches, but no pigtails for it.
I would try Saxart's idea. How much have you cleaned off that gearbox?
Maybe if you got it very clean, things might just fit.
Spray it with degreaser, then taxi over to the $1.50 carwash and zap it good. Wear your wetsuit. Clean trucks run better. Plus you'll be dropping off 20 to 50 lbs of caliche.

89AKurt · 03-15-2019, 11:45 AM

Quote:

Originally Posted by '68OrangeSunshine

[...]

Funny, LMC sells the Backup Light Switches, but no pigtails for it.
I would try Saxart's idea. How much have you cleaned off that gearbox?
Maybe if you got it very clean, things might just fit.
Spray it with degreaser, then taxi over to the $1.50 carwash and zap it good. Wear your wetsuit. Clean trucks run better. Plus you'll be dropping off 20 to 50 lbs of caliche.

For once, I'm ahead of you! Been to all the car washes around here that *might* have hot water and high pressure, numerous times, even when the transmission tunnel was off I did from inside the cab. I got a can of the degreaser to spray on before going again. It's cleaner than 99% of the vehicles on the road. LOL Also costs $1.75 or $2.00 up here. I should take more time to clean out the plug, with a toothpick and carb cleaner.

my67c20 · 03-15-2019, 11:20 AM

Just ditched my stick for an auto, so got that harness neatly bundled. If you were closer, i would offer it up to you, but otherwise check the bone yards.

89AKurt · 03-15-2019, 11:47 AM

Quote:

Originally Posted by my67c20

Just ditched my stick for an auto, so got that harness neatly bundled. If you were closer, i would offer it up to you, but otherwise check the bone yards.

Thanks for the offer, thought someone would have one cluttering up garage space. Stay tuned.....

**HO455** · 03-16-2019, 09:49 AM

Have you compared it to the connector used on the front turn signal? They look pretty similar to the 68-72 style.

Snoopy1402 · 03-23-2019, 09:51 AM

Are you stuck on having an oe connector? I used female 1/4" spade terminals on mine. polarity doesnt matter, its simply closing a ground circuit.

89AKurt · 03-23-2019, 01:58 PM

Quote:

Originally Posted by Snoopy1402

Are you stuck on having an oe connector? I used female 1/4" spade terminals on mine. polarity doesnt matter, its simply closing a ground circuit.

I was thinking of doing that, thanks for specifying the size. Having Pebble Beach standards is out of the question.

03-13-2019, 02:17 PM	#1
89AKurt Registered User Join Date: Dec 2015 Location: Prescott Arizona Posts: 621	Wiring connector for back-up switch I found the wire terminal plug that goes to the back-up switch on the transmission is messed up. When I barely got it inserted onto the terminal, it works. But it falls off too easily. Is there a source for just the terminal plug? I would show pictures, but Flickr is being stupid at the moment. __________________ 1968 Long Bed 2016 Honda Civic Coupe EX-T ticket magnet

03-14-2019, 12:29 AM	#6
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,507	Re: Wiring connector for back-up switch The system chokes on multiples. There is a limit to 5, but I've been rejected by 2 or 3 sometimes. Often I get some gibberish about 'Security tokens.'' If I wait or cut down the number of pix, it posts. Funny, LMC sells the Backup Light Switches, but no pigtails for it. I would try Saxart's idea. How much have you cleaned off that gearbox? Maybe if you got it very clean, things might just fit. Spray it with degreaser, then taxi over to the $1.50 carwash and zap it good. Wear your wetsuit. Clean trucks run better. Plus you'll be dropping off 20 to 50 lbs of caliche. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

03-15-2019, 11:20 AM	#8
my67c20 Registered User Join Date: Jun 2002 Location: Tucson AZ by way of WI & CA Posts: 510	Re: Wiring connector for back-up switch Just ditched my stick for an auto, so got that harness neatly bundled. If you were closer, i would offer it up to you, but otherwise check the bone yards.

03-16-2019, 09:49 AM	#10
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,370	Re: Wiring connector for back-up switch Have you compared it to the connector used on the front turn signal? They look pretty similar to the 68-72 style. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

03-23-2019, 09:51 AM	#11
Snoopy1402 Registered User Join Date: Dec 2017 Location: Adrian Posts: 6	Re: Wiring connector for back-up switch Are you stuck on having an oe connector? I used female 1/4" spade terminals on mine. polarity doesnt matter, its simply closing a ground circuit.



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