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Go Back   ClassicBroncos.com Forums > 66-77 Ford Bronco > Bronco FAQ > Electrical FAQ

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Rewire Options Rewire Options
Overview of the various rewire kits
67bondobronc
07/19/06
There is no doubt that one of the most important components that you must check out on your EB is the wiring system. All of our EB’s are over thirty years old and the wiring is frayed, brittle, and usually spliced in several places. You may be able to use the original wiring in your EB and the various vendors offer different parts of the original wiring harness if you only need to replace one section. One thing you will realize fast when dealing with your old harness is that the Ford engineers had a cruel sense of humor because the color codes of the wires vary from year to year. So, what is an easier alternative to all of this? There are several companies that offer complete kits to rewire our EB’s, which I have listed alphabetically (not in preferential order).

Centech offers a complete rewire kit and this is considered one of the two easiest options to rewiring your EB. The kit comes with GM-styled sealed plugs and the connectors are Ford OEM so your lights will plug in with no problems. A new dimmer, wiper, and light switch are included in the kit and the wires are labeled. The wires in this kit are long enough so you can modify them if needed. The newer Centech harnesses include an adapter so your original ignition switch can be used and the fuse box has eleven fuses. You can find this harness for around $430.
http://www.centechwire.com/catalog/broncos/br10.shtml

EZ Wiring offers four different rewire kits but these are not EB specific and they will require more automotive electrical knowledge base than other kits. I have heard that these kits are used by many of the street rod guys with great success but there has not been a lot of feedback on our Board about these. These kits come with labeled wires and they can be modified to include any aftermarket equipment or gauges that you have added to your EB. The best thing about the kits are the prices, which range from $120-$165.
http://www.ezwiring.com/

Painless Wiring offers a complete rewire kit for EB’s. This is the second of the two easiest ways to rewire your EB. This kit includes wires that are labeled, 12 fuse block which is covered and for resistance to weather. The ignition, wiper, headlight, and dimmer switches also come with this kit. The connectors on the Painless kit are Ford OEM so your lights will plug directly into them. Long wires enable you to mount the fuse block where you would like under the dash. This harness is currently being offered for around $579 at different sites on the web.
http://www.painlesswiring.com/webcatalog.php

Ron Francis offers a kit that can be used on EB’s. This is a popular choice for those who have aftermarket accessories on their rides and want a custom wiring kit. This kit does rewire an automotive electrical background. Ron Francis kits offer 18 circuits on 16 fuses and the wires are long enough to be custom-fit to any application. Randy at Adventurous 4x4 offered a Mass Buy recently on a Ron Francis kit that he modified specifically for the EB but this kit is not listed on the Ron Francis website. This wiring kit will run you around $399.
http://www.ronfrancis.com/wiringharness.php

Which wiring kit is the best? Well, that question will bring you more opinions than you ever wanted. I believe it is safe to say that all kits are adequate and the Centech and Painless are probably the easiest for novices. If you have an EB that has a lot of “goodies” then you probably want a kit like Ron Francis or EZ Wiring. Many people on the Board have been able to use all these kits with EFI. How long does a rewire job take? Usually about 20 hours………..of course this depends on your ability and how many “beverages” you consume.

Whatever you do, make sure you check the wires in your EB and if you think you need new wires then you probably do, so replace them! I know there are other companies that offer wiring kits but these are the four that have received a vast amount of attention on classicbroncos. If you have any information that could be included in this FAQ please respond below.  
  #1  
rednecktech on 10/28/08, 09:14 AM
Wiring problems

Does anyone have a wiring schematic, or do you know if they are included in haynes or chilton manuals?
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  #2  
mudmagnet63 on 08/26/10, 01:48 AM
http://classiccarwiring.com/

This is what I used comes laminated so grease wipes right off and color coded made trouble shooting a breeze. a must have for EB owners

Mud
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  #3  
markperry on 08/26/10, 09:49 PM
I did the Centech.....very straight forward!
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