66 K-10 back up light switch - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**chtr65** · 12-23-2019, 01:10 AM

Does anyone have a photo of the correct back up light switch for a 66 K-10 4 speed transmission. Is there someone that offers the correct back up switch for the 4 speed transmission. It appears I have everything but the switch. Thanks in advance.

Llay R. Rac · 12-23-2019, 03:10 AM

here is a pic of backup light stuff, for 4 speed transmission. i dont know if C-10 is different then K-10.
i dont know of anyone who sells the switch, one post i read suggested trying to find a barrel switch with a push button from an electronic supplier.

**chtr65** · 12-23-2019, 01:42 PM

Thanks for the info. Great stuff. Any chance I can bother you for the length of the switch. Like length overall, length of main body, and then the length of the moving up and down part of the switch. This will help me find the correct switch. It appears I have all the other items intact on the transmission. Thanks Again, I hope you and your family have a great holiday.

Llay R. Rac · 12-23-2019, 04:28 PM

Name: bu switch.jpg
Views: 174
Size: 45.5 KB

hope this helps.
the button doesn't click, its spring loaded and extends when the lever isn't pressing it.
the button will press in as far as the threaded collar.

**aerotruk63** · 12-23-2019, 05:04 PM

sstock · 12-23-2019, 06:08 PM

If you can find a top cover from a 1967 sm420 it has a factory built in reverse contact switch. Much better and very much so less problematic. All else being the same.

**chtr65** · 12-23-2019, 08:11 PM

Thanks again for responding with great info. This will help in a big way. Happy Holidays to all.

Bushman66 · 12-23-2019, 09:24 PM

Quote:

Originally Posted by sstock

If you can find a top cover from a 1967 sm420 it has a factory built in reverse contact switch. Much better and very much so less problematic. All else being the same.

Can you post the part number on that top cover? Can't quite make it out in the pic...

Thanks!

sstock · 12-23-2019, 10:31 PM

Quote:

Originally Posted by Bushman66

Can you post the part number on that top cover? Can't quite make it out in the pic...

Thanks!

Sure
Casting Date August 12, 1966
Casting number 3895779

LostMy65 · 12-24-2019, 12:43 AM

There's a thread in these forums where a member found a newer switch that works.
I'll see if I can find it.

LostMy65 · 12-24-2019, 12:48 AM

Here's one of the threads;
http://67-72chevytrucks.com/vboard/s...ghlight=Backup
I think there's another thread where it's shown installed.

LostMy65 · 12-24-2019, 12:51 AM

Found it:
http://67-72chevytrucks.com/vboard/s...77#post6039777

**chtr65** · 12-24-2019, 01:15 AM

Thanks Lost my 65. Huge help. I am a little surprised to see they are hard to come by. Happy Holiday's to all. Once again you guys rock. Now all I have to do is find a good used on, or NOS one. The search begins.

Bushman66 · 12-24-2019, 02:47 AM

Quote:

Originally Posted by LostMy65

Here's one of the threads;
http://67-72chevytrucks.com/vboard/s...ghlight=Backup
I think there's another thread where it's shown installed.

Awesome, thank you!

12-23-2019, 01:10 AM	#1
chtr65 Registered User Join Date: Mar 2013 Location: Lewisberry, Pa. Posts: 544	66 K-10 back up light switch Does anyone have a photo of the correct back up light switch for a 66 K-10 4 speed transmission. Is there someone that offers the correct back up switch for the 4 speed transmission. It appears I have everything but the switch. Thanks in advance.

12-23-2019, 03:10 AM	#2
Llay R. Rac Registered User Join Date: Jul 2016 Location: Arizona Posts: 324	Re: 66 K-10 back up light switch here is a pic of backup light stuff, for 4 speed transmission. i dont know if C-10 is different then K-10. i dont know of anyone who sells the switch, one post i read suggested trying to find a barrel switch with a push button from an electronic supplier. Attached Images __________________ 1965 Suburban, 2 wd.,292, 4-speed. proudly owned and operated since Valentines day 1969.

12-23-2019, 01:42 PM	#3
chtr65 Registered User Join Date: Mar 2013 Location: Lewisberry, Pa. Posts: 544	Re: 66 K-10 back up light switch Thanks for the info. Great stuff. Any chance I can bother you for the length of the switch. Like length overall, length of main body, and then the length of the moving up and down part of the switch. This will help me find the correct switch. It appears I have all the other items intact on the transmission. Thanks Again, I hope you and your family have a great holiday.

12-23-2019, 04:28 PM	#4
Llay R. Rac Registered User Join Date: Jul 2016 Location: Arizona Posts: 324	Re: 66 K-10 back up light switch hope this helps. the button doesn't click, its spring loaded and extends when the lever isn't pressing it. the button will press in as far as the threaded collar. __________________ 1965 Suburban, 2 wd.,292, 4-speed. proudly owned and operated since Valentines day 1969. Last edited by Llay R. Rac; 12-23-2019 at 04:33 PM.

12-23-2019, 05:04 PM	#5
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: 66 K-10 back up light switch __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1

12-23-2019, 06:08 PM	#6
sstock Registered User Join Date: Mar 2014 Location: Tacoma Wa Posts: 146	Re: 66 K-10 back up light switch If you can find a top cover from a 1967 sm420 it has a factory built in reverse contact switch. Much better and very much so less problematic. All else being the same. Attached Images __________________ 1953 3100 261cu in, sm420, 3.55 torque tube, omaha orange 1964 GMC 1000 series,custom, 305E, sm420

12-23-2019, 08:11 PM	#7
chtr65 Registered User Join Date: Mar 2013 Location: Lewisberry, Pa. Posts: 544	Re: 66 K-10 back up light switch Thanks again for responding with great info. This will help in a big way. Happy Holidays to all.

12-24-2019, 12:43 AM	#10
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: 66 K-10 back up light switch There's a thread in these forums where a member found a newer switch that works. I'll see if I can find it. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

12-24-2019, 12:48 AM	#11
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: 66 K-10 back up light switch Here's one of the threads; http://67-72chevytrucks.com/vboard/s...ghlight=Backup I think there's another thread where it's shown installed. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

12-24-2019, 12:51 AM	#12
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: 66 K-10 back up light switch Found it: http://67-72chevytrucks.com/vboard/s...77#post6039777 __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

12-24-2019, 01:15 AM	#13
chtr65 Registered User Join Date: Mar 2013 Location: Lewisberry, Pa. Posts: 544	Re: 66 K-10 back up light switch Thanks Lost my 65. Huge help. I am a little surprised to see they are hard to come by. Happy Holiday's to all. Once again you guys rock. Now all I have to do is find a good used on, or NOS one. The search begins.



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