CJ3b Wirirn Route behind Master Cylinder Brake Pump

[Luis]

I have a question about the wiring route behind the brake pump. Is it through the bottom hole that the wires must pass or that little hole at the top?
Thanks in advance

[Rus Curtis]

Luis,
There aren't many images of that area.  It's hard to get a camera in there to capture what's going on unless the vehicle is without a tub - making it easier to see (like yours).

In your images, they both show in that large round opening what appears to be remnants of an old brake line.  This is how I hooked up my brake line to the rear as that line needs to run along the inside of the C channel of the frame.  And it lined up with the connector on the front end of the master cylinder (m/c).

To your question, I searched around a little to find an image of the wires at that location.  I couldn't find any specifically for that hole but I did find a couple of threads on the CJ2A Forum:

https://www.thecj2apage.com/forums/brake-line-routing_topic22205.html?KW=brake+line+routing

https://www.thecj2apage.com/forums/cj2a-wiring-harness-routing-pics_topic41298.html?KW=brake+line+routing

On each link, look at the second post; One confirms the brake line is there and the other indicates the harness follows the brake line.  This could suggest the harness enters that round hole with the brake line to run down the C channel.

In my build thread (over on the Tapatalk host) I pointed out my m/c leads were too short and what I did to fix that.  In the thread I didn't post what that looked like but since I just laid the harness over the top of the m/c and let it loop down into the C channel after passing the m/c those brake switch connectors weren't long enough. 

(see attachment)

This may be wrong (it wouldn't be the only mistake I made on the harness).  This could be one of the reasons why I needed short extensions for the brake light switch.

Hopefully, others with better images and/or more knowledge can add to this.

[oldtime]

Rear wiring harness enters frame channel through the "big hole".

[Luis]

Hi rus and Ken, Thank you!
I took the image from the web to specify what I mean. It is not my jeep.
The question also arises because my rear harness is about 4 inches longer. It is wavy inside channel C of the frame.
Does the cable run along the top or bottom of the c channel?

[Rus Curtis]

Rear wiring harness enters frame channel through the "big hole".

Looks like I've got some rewiring to do!

Luis, all the images and jeeps I've seen the wiring runs along the bottom:

This is Lawrence Wade's jeep from the CJ3B Page


**ADDED**:
Another image showing wiring inside C channel


**See also attached image below that shows more detail on inside C channel.  Left is wiring clip, under frame hole is brake line clip**

For now, you can still go through my build that's still over on the old Tapatalk address. 

https://www.tapatalk.com/groups/cj3b_bulletin_board/green-gruntt-t4658.html

It covers my wiring challenges - including a lot of extra wire in the back!  Be sure to fit it and double check the locations of all the connections before cutting.  When I get some progress on it, I will post the entire thread over here, including relocating the wiring harness next to the m/c!

Notice how I started the lower harness at the front (toe board gusset in your latest image) and from there ran it back to the rear.  Once it is placed, it should lay flat all the way on the C channel.

[Luis]

Hi Rus! Thank you very much for the explanation and link.
The wiring asphalt loom of which point to point must be installed in the chassis. Enter to this hole too?
Regards

[Rus Curtis]

..... Enter to this hole too?.....

Luis,
See Oldtime's post above.

ADDED:  Also note I've added 2 more images above.  I attempted to attach an image to the above post that has 2 embedded photos.  I'm attaching here just in case there's a limit to any single post.

(Well, it shows attached but not seeing it)  I see it now!

[oldtime]

I have an OEM NOS rear wiring harness assembly at home.
I also have a mostly complete 3B chassis  assembled that I'm currently working on.
I can position the harness to the frame and take some pics so that you can see how and exactly where it is clipped to the lower frame channel.

[Luis]

Rus, Ken, Thank you for the info.
Not knowing the English language, there is info that I can hardly interpret if I do not use a translator.
Sorry if sometimes I do not understand everything that is written.

I wating for the pics fron OEM wiring Oldtime!!

Best regards

[Luis]

Well this is my wiring is installed

















Best regards!

[Rus Curtis]

Not knowing the English language, there is info that I can hardly interpret if I do not use a translator.
Sorry if sometimes I do not understand everything that is written.

Not sure if it helps, but if you wrote anything in your native language, I'd have to use a translator for everything!  You're doing great!

I CAN SEE THESE IMAGES!!

Nice job on installing the wiring harness!  Your solution to secure along the rear crossmember is clean.  I would add that there is a Bulletin from Willys that addresses passing over the frame to complete the wiring for the passenger tail light - at least for the civilian models.  Perhaps this is another distinct difference with the M606. 

Page 2, starting with 2nd post:
https://www.tapatalk.com/groups/cj3b_bulletin_board/green-gruntt-t4658-s10.html