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Old 11-20-2018, 02:41 AM
Mass's Avatar
Mass Mass is offline
232 I6
Join Date: Sep 26, 2017
Location: Dallas
Posts: 87
Serehill style harness?

My question is... Is there anyone making a Serehill style plug and play for our jeeps? If not I'd be willing to make a few to sell.

I'm planning on building the complete harness from the ground up with 12 gauge cross-linked polyethylene wire for the load side, waterproof relays, aircraft grade butt connectors and ring terminals, heat shrink, ceramic sockets, etc.

I also think it would be cool to build these to be plug and play where all you would need is super basic tools.

I'm in the process of redoing my temporary headlight relay harness with quality parts. I bought an Ebay harness and really didn't like how cheap it looked so I grafted it together using some good used shelf parts in an effort to get it working. Now I want to redo it the right way with good parts and add a special feature for fog/driving lights.
89' GW 6BT Cummins
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Old 11-20-2018, 09:31 AM
johnsonic johnsonic is offline
258 I6
Join Date: Mar 12, 2015
Location: Oregon
Posts: 253
Z&M makes the harness:
1984 GW
Comp 260H
Magnum Roller Rockers
Wiseco -21cc Forged Pistons
Performer Intake
Holley SA 670
MSD 8523
Dakota Digital custom cluster
Serehill headlamp harness
NWMP aux tank

1987 GW deceased
...but the parts live on
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Old 11-20-2018, 11:18 AM
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nograin nograin is offline
304 AMC
Join Date: Dec 19, 2000
Location: Philadelphia, Pa., USA
Posts: 2,067
Rob (screen name crackedback) will make them
and sell kits too. E-mail or PM him if interested.
He's got a prototype for the SJ's.
Here's his ad for the Chryslers.

Dan Stern is another source of kits.
He also is one of the few in the US who tries to stock Cibie products.
Sometimes he can be a little overboard in applying his point ov view to other people situations in emails and phone calls. ie. I asked for a replacement headlight (Cibie) and in his repsonse goes on about making the sidemarkers blink with the turn signals. Uh. The wagon's fronts already do that, and my car is pre '68 so there are none.

If you just need some individual items, poke around or ask.
I like marine grade wire and I can get it from the local boating places by the foot in a wide selection of colors.
The connectors use 'Packard 56' open barrel terminals accept for the headlights themselves. They use a wider version either of the same style, or the Chrysler/Ford type that look similar to AMP Fast-on terminals.

I'll post up some links tonight if you want.
'85 Grand Wagoneer
360 727auto, NP229
body by beer (PO)
carries wood inside
no "wood" outside
My other car is a fish
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Old 11-20-2018, 09:12 PM
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Mass Mass is offline
232 I6
Join Date: Sep 26, 2017
Location: Dallas
Posts: 87
z&m wants $189? Jeeez! I can't afford that. I sourced all the top shelf parts and came up with ~$40 to make my own.
Looks like selling them is out the window. too much competition lol

I prefer making my own harnesses anyway. I'm ocd with it and love to watch it come together. Why does everyone want an arm and a leg for a simple harness?

Nograin, I love the marine wire for anything outside the engine bay. It's especially perfect for anything running in the frame rails or outside the cab. It's a little pricey but worth it.
I prefer gxl under the hood though due to the higher temperature rating. Prolly wont reach 125C but it seems good to me.

Packard 56 for the headlight side or relay side?

I'm thinking I'll do 10 gauge all the way and redundant relays/breakers for each side. Essentially isolating each side to its own circuit. I like the safety margin in the event of a relay failure or breaker trip. ..Also going to use sta-kon or AMP terminals wherever possible.

Think I should I do a write up on it?
89' GW 6BT Cummins
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Old 11-21-2018, 08:12 AM
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letank letank is offline
AMC 4 OH! 1
Join Date: Jun 03, 2002
Location: San Francisco
Posts: 3,923
Tell us where did you source the parts?
20 years ago I used regular automotive wires and hella headlights relays and 12 gauge wires when I installed the H4 headlights
The ceramic sockets and the thermal are a nice touch

Edit: I bought Rick's Headlight wiring for the 85 a few years ago, and it was such a nice clean design, a real plug and drive.
74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
85 Gwag, 226 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.

See Ouray 2013, Engine bits and Fuel and brake lines, and Body work

Last edited by letank : 11-21-2018 at 11:49 AM.
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Old 11-22-2018, 02:34 AM
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Mass Mass is offline
232 I6
Join Date: Sep 26, 2017
Location: Dallas
Posts: 87
How much did Rick sell them for?

I'm sourcing the parts from a few of my favorite places.
possibly Summit racing
Like everything, though. Cost goes down with volume.

Looking at using USA made OMRON (personal favorite) weather proof relays but price may be prohibitive.

I'll be doing a cost comparison spreadsheet on 3 different configurations.

Roughly speaking
1. 12 gauge w/summit or Hella relays
2. 12 gauge left/right full redundancy, summit or Hella relays
3. 10 gauge w/OMRON relays

I had a headlight relay straight up fail a few years ago and thank god the moon was full so I could see the road enough to pull over. I must have PTSD because now I'm weird about the redundancy.
Plus you can run 12 gauge with a HUGE safety margin when you only have 1 headlight and maybe a fog on each circuit.

I have a feeling I can make a high quality harness and sell it for around $80 shipped. Gotta see how it turns out.
Give me a few weeks and I'll have one posted over there for sale. I'll also take pics for a possible write up.

Tailgate and window regulator relays are definitively on the list.
89' GW 6BT Cummins
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Old 11-21-2018, 08:14 AM
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8man 8man is offline
304 AMC
Join Date: Jan 04, 2011
Location: Bryan, Texas
Posts: 1,553
Rick made his harnesses one at a time, when someone wanted one. He used parts similar to what you are suggesting, in his opinion only the best parts. It was truly a plug in system! No electrical experience and you could do it anyway.

I would encourage you to put a picture of one in the homegrown for sale section, at a "more" reasonable price than some of the ones you were told about and see if there is interest. If I hadn't done both of Rick's harnesses I would be.

He also did a great tailgate window harness. We rebuilt the stock Jeep switch for RT so the tailgate switch looks stock as it sits in the dash, but works like the newer rocker switch that he used. Really simple switch rebuild. His harness came with the newer rocker switch which is what I'd recommend. If someone wants the old switch, just rebuild it to work.

Good luck.
79 Cherokee S (current project)
82 Cherokee (parts for the 79)

Member FSJ Prissy Restoration Association
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Old 12-19-2018, 07:47 PM
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Mass Mass is offline
232 I6
Join Date: Sep 26, 2017
Location: Dallas
Posts: 87
It seems I'll have to use the male connectors I have. The second ones I ordered wouldn't fit without without hacking away some plastic on connector itself.

I got the last few things I was waiting on in the mail today so I'll see if I can't find time to start building it tomorrow.

These are the all important Packard 59 terminals that will attach directly to the bulb terminals. They come on a reel. How strange is that?

89' GW 6BT Cummins
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Old 01-09-2019, 06:27 PM
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Tripwire Tripwire is offline
hey,does anyone here know how to.......
Join Date: Jul 30, 2000
Location: WA State
Posts: 4,476
I bought one - WOW !!!! as good as it gets for your rig A+

a work of art, well made, sealed connections - the type of quality the most finicky /prissy OCD person would be happy with

Abort? Retry? Ignore? >

86 GrandWag. Howell fuel Injected 360. MSD Ignition + Dizzy. 727/229 swap BJ's 2" Lift and 31's

88 Wrangler 4.2, Howell TBI and MSD - Borla Headers w/ Cat-back + winch and 31's AND a M416 trailer (-:
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