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  #221  
Old 09-22-2020, 09:06 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,263
Hitch Day .. UGH

So, I was originally never going to tow anything with the 401.. but that has all changed with the RT 66 trip and new engine.

So, I recovered my original factory hitch and wiring from my buddy who "stored" it for me for 5 years! lol [ Thanks Dan ! ]

I figured this would be a no brainer, easy .. NOPE.

I forgot this thing is made from 1/4 thick steel.. It is heavy !! Dang.
I had a ton [ pun intended ] of trouble holding this thing up and trying to install it.
Almost smashed my face when I lost control of it.. uh oh.

[IMG]http://[/IMG]

Then, after fighting it "almost" into position.. I saw that the new tailpipe was going to interfere with the hitch. Dammit!!

So out comes the cutoff wheel.. and much cutting later, removed the small section that would hit... THEN had to fight it back into position and bolt it up.

I was so beat after this, I didn't even bother with the wires yet.. Anybody have details on this? Specifically, the large wire with the black connector on it?
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It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2005 Unlimited Rubicon - Built
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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  #222  
Old 09-22-2020, 10:36 PM
78 WIDETRAC's Avatar
78 WIDETRAC 78 WIDETRAC is offline
327 Rambler
 
Join Date: Aug 19, 2003
Location: Portland, Or
Posts: 616
I just unplugged my towing box from the 79 chief. It plugs into the factory harness. at least mine did. I don't remember a plug that looked like that though. If it wasn't dark out I go crawl under it and get a pic.
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  #223  
Old 09-24-2020, 01:31 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,263
Quote:
Originally Posted by 78 WIDETRAC
I just unplugged my towing box from the 79 chief. It plugs into the factory harness. at least mine did. I don't remember a plug that looked like that though. If it wasn't dark out I go crawl under it and get a pic.

Please do! I "think" this may be a feed for a brake controller? idk really...

Also, note the in line single plugs .. are they really just connected together like this?

Maybe a pic of all the connections please ??

TIA ..
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2005 Unlimited Rubicon - Built
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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  #224  
Old 09-24-2020, 03:23 PM
78 WIDETRAC's Avatar
78 WIDETRAC 78 WIDETRAC is offline
327 Rambler
 
Join Date: Aug 19, 2003
Location: Portland, Or
Posts: 616
I hope these help.



This is a pic of the box plugged back in line using the factory harness.





This is The tow harness removed and the harness reconnected.





My wiring is a mess under there but here is a pic of it and the connectors some factory some not.






We seem to have the same hitch. My jeep had the 2nd fuel tank. I had to remove it because it was full of rusty gas.






This is from the 79 Chief.
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  #225  
Old 09-25-2020, 01:09 PM
rang-a-stang's Avatar
rang-a-stang rang-a-stang is offline
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Join Date: Oct 31, 2016
Location: Camarillo, CA
Posts: 3,692
Mine looks exactly the same as 78 WIDETRACs. Same hitch, same electronic box, same connectors. I also had to trim my hitch to fit my exhaust. I have a spare tire hanging in my mine, though. The relays in that box are REALLLLLY loud. I can hear them clicking more than the clicker under my dash! HAHAHA!

My understanding is all that box does is separate the trailer light power from the Cherk harness so when you plug a trailer in, the blinkers blink at the same frequency and you don't blow fuses when you turn the lights on.

I also have a thick blue wire under my dash that is not connected to anything and a 2 pin connector under my cargo area that has that blue wire and another one (maybe ground?). So all the wiring is there for a 7 pin RV style connector/brake controller but I am 90% sure the electronic brake feed does not go through the box.
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(Cherokee Build Thread)
11 Nissan Pathfinder Silver Edition 4x4
09 Mazdaspeed3 Grand Touring
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  #226  
Old 09-25-2020, 01:49 PM
bigwalton's Avatar
bigwalton bigwalton is offline
232 I6
 
Join Date: May 25, 2006
Location: MI
Posts: 137
Quote:
Originally Posted by cu4whln
I am never going to tow anything...

Quote:
Originally Posted by cu4whln
I do know I will not be towing anything.

Just going back through this entire thread and had to quote this

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'77 Cherokee S 4-door - 401/EZ-EFI - patina driver
'84 Alaskan Postal CJ-8 - RHD fun driver/trail rig
'98 TJ - DD
'05 Rubicon LJ - DD
'18 Renegade - DD
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  #227  
Old 09-25-2020, 02:43 PM
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bigwalton bigwalton is offline
232 I6
 
Join Date: May 25, 2006
Location: MI
Posts: 137
Just a thought, for what you want to do, why not wire in a new plug socket and brake controller? I know it's $$$, but I would feel a lot better with new stuff from the battery/brake pedal to the trailer and take all that old stuff out of the loop.

I did a Redarc controller and one of the sockets that has both the 4 and 7-wire options when I redid my camping trailer on the Postal. The socket alone was worth it to make hooking up ANY trailer a breeze and you don't need to ever worry about adapters. Of course you don't need to redo ALL of the wiring to add that kind of socket, but I like your do-it-right-once thinking here FWIW
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'77 Cherokee S 4-door - 401/EZ-EFI - patina driver
'84 Alaskan Postal CJ-8 - RHD fun driver/trail rig
'98 TJ - DD
'05 Rubicon LJ - DD
'18 Renegade - DD
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  #228  
Old 09-28-2020, 08:35 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,263
Quote:
Originally Posted by bigwalton
Just going back through this entire thread and had to quote this


Yea, yea .. lol

So, a modern trailer wiring upgrade might be the way to go... The original factory one has relays for all the trailer lights. Seems to be overkill with modern led lights with little load.

I do need a brake controller anyway.. and not sure the 77 design supports electric trailer brakes.

Did you tap directly into each feed for the lights then?
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2005 Unlimited Rubicon - Built
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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  #229  
Old 09-28-2020, 08:39 PM
cu4whln's Avatar
cu4whln cu4whln is offline
350 Buick
 
Join Date: May 16, 2008
Location: Canton, Mi USA !
Posts: 1,263
Quote:
Originally Posted by rang-a-stang
Mine looks exactly the same as 78 WIDETRACs. Same hitch, same electronic box, same connectors. I also had to trim my hitch to fit my exhaust. I have a spare tire hanging in my mine, though. The relays in that box are REALLLLLY loud. I can hear them clicking more than the clicker under my dash! HAHAHA!

My understanding is all that box does is separate the trailer light power from the Cherk harness so when you plug a trailer in, the blinkers blink at the same frequency and you don't blow fuses when you turn the lights on.

I also have a thick blue wire under my dash that is not connected to anything and a 2 pin connector under my cargo area that has that blue wire and another one (maybe ground?). So all the wiring is there for a 7 pin RV style connector/brake controller but I am 90% sure the electronic brake feed does not go through the box.

Whoa! Hmm, NOW I read this... Hmmm

The blue wire should not go through the box.. it sends the signal from the brake controller I believe. Now I need to rethink this situation.

Time to look for that under dash blue wire and get out the multi meter !!
__________________
It's not yours 'til ya bleed on it . . .

1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2005 Unlimited Rubicon - Built
2001 XJ : Driver 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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  #230  
Old 09-28-2020, 09:04 PM
bigwalton's Avatar
bigwalton bigwalton is offline
232 I6
 
Join Date: May 25, 2006
Location: MI
Posts: 137
Quote:
Originally Posted by cu4whln
Did you tap directly into each feed for the lights then?

I did, I'm running LED taillights/turns on the Postal so I already have a digital flasher unit and the trailer is LED as well.

I simply go overboard with anything to do with towing/trailers, that's why my little camp trailer has brakes and all the wiring related to it is brand new.
__________________
'77 Cherokee S 4-door - 401/EZ-EFI - patina driver
'84 Alaskan Postal CJ-8 - RHD fun driver/trail rig
'98 TJ - DD
'05 Rubicon LJ - DD
'18 Renegade - DD
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