The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-11-2021, 04:41 PM   #1
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,188
Anyone describe how the 400 Transmission Kickdown Harness is supposed to be routed?

Working on a 1971 402/400TH

I rec'd the harness below, which plugs into the connector that comes through the firewall for transmission kickdown.

I'm stumped what the plastic clips are for, and the 3/8" hole connector as well. My 71 402/400TH was routed similar the image of the Assembly Manual, using two fixed clips and one at the transmission.

My 72 402/400TH is routed over to the RH side of the transmission, lays on top of the transmission to route to the terminal on the LH side??? It doesn't have the plastic clips, but does a steel clip (open-ended), though it's not attached to anything, nor do I see where it could be - it's probably wrong.

This looks like the common harness however. Can anyone tell me how the wire is mounted and where the three clips on the harness go? Near as I can tell I need to pull the clips off and match up to similar the Assembly Manual, which is like I found it in the first place

Thank you
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

Last edited by 71CHEVYSHORTBED402; 07-12-2021 at 01:15 AM.
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 07-11-2021, 06:31 PM   #2
mr.mud1
Registered User
 
mr.mud1's Avatar
 
Join Date: Dec 2020
Location: Joggins Nova Scotia
Posts: 1,598
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

hi Tony,i'll be working on my truck tomorrow and i'll look and send you some pictures as to what my harness looks like and how it's installed.Greg
mr.mud1 is offline   Reply With Quote
Old 07-11-2021, 07:49 PM   #3
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,188
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Quote:
Originally Posted by mr.mud1 View Post
hi Tony,i'll be working on my truck tomorrow and i'll look and send you some pictures as to what my harness looks like and how it's installed.Greg
Right on Greg, I may have thought to ask you
__________________
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
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 07-11-2021, 09:55 PM   #4
Steeveedee
Who Changed This?
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,287
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Loosen the bell housing bolts, push one or more of the wires in between the engine and trans, tighten the bolts back up! I've never done this... I'm here all week, tip your waitress!
__________________
~Steven

'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
Steeveedee is offline   Reply With Quote
Old 07-12-2021, 12:49 AM   #5
kwmech
Senior Member
 
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,480
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Quote:
Originally Posted by Steeveedee View Post
Loosen the bell housing bolts, push one or more of the wires in between the engine and trans, tighten the bolts back up! I've never done this... I'm here all week, tip your waitress!
Sometimes the transmission shops will do this for you at no charge.
kwmech is offline   Reply With Quote
Old 07-12-2021, 12:55 AM   #6
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,188
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Quote:
Originally Posted by Steeveedee View Post
Loosen the bell housing bolts, push one or more of the wires in between the engine and trans, tighten the bolts back up! I've never done this... I'm here all week, tip your waitress!


First thing in the morning
__________________
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
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 07-12-2021, 07:45 PM   #7
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,188
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Nice to have friends in high places Nice to have that low mile primarily intact truck too, thank you. I don't have the harness from the cab yet.
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
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 07-12-2021, 08:05 PM   #8
mr.mud1
Registered User
 
mr.mud1's Avatar
 
Join Date: Dec 2020
Location: Joggins Nova Scotia
Posts: 1,598
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Hi Tony,I love it when a plan comes together.
All the best.Greg
mr.mud1 is offline   Reply With Quote
Old 07-12-2021, 10:06 PM   #9
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,188
Re: Anyone describe how the 400 Transmission Kickdown Harness is supposed to be route

Quote:
Originally Posted by mr.mud1 View Post
Hi Tony,I love it when a plan comes together.
All the best.Greg
You do?

Gave me a chance to more better the rear of the harness I've installed a lot of times, a run was on the wrong side of the modulator tube, I think. I ended up pulling the harness' dual purpose for the right sending wire connector, and can say the replacement fits much better due a longer housing slot.

I put the bottom kickdown clip on the same line as the top one. Don't know if it's right, but I think it looks clean, the clips are happy, nice slack and the wires off stuff. Timing is everything, this would have taken me forever if at all - I was "going around the block to get next door".

Turns out my 72 was closer to right, when it's not SO HOT I'll pull it off the housing & hang it. The wiring in that truck is a little touchy. Doesn't help the cab is naturally vented.
__________________
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

Last edited by 71CHEVYSHORTBED402; 07-12-2021 at 10:16 PM.
71CHEVYSHORTBED402 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:21 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com