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Old 02-02-2005, 08:51 AM   #1 (permalink)
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22RE buggy harness

i am planning on tearing down a harness in the very near future.

my question for you guys is: what do you need it to contain.
are you guys wanting engine control only?
do you need to keep any light switches, brakes turn etc?
are you wanting to keep the pump safetys intact?
how important are the stock gauges and senders, fuse boxes control relays.

the other thing to consider is that there are two harnesses pre and post 88
i am tearing into an early 85-87 style.

lets hear some suggestions and get some info so i can get busy and get back to you guys.
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Old 02-02-2005, 09:06 AM   #2 (permalink)
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Just enough to make the engine run properly. The pump safety feature would be cool, but not everyone is gonna run the same type pump/fuelcell. Would it fit "any application" ? I think everybody's gonna do things differently as far as lights and other accessories. A stand alone engine harness would be a great busness oportunity, there is a demand! Keep the price down!
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Old 02-02-2005, 09:25 AM   #3 (permalink)
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agreed, if you want to score fat cheese with this, just offer a harness that does just enough to run the engine right... lights/guages and all that crap shoul be kept seperate since every buggy is gonna run different chiat there anyway. Low price + cool simple harness = you rich. Go for it.

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Old 02-02-2005, 09:37 AM   #4 (permalink)
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Oh, and one other thing you already mentioned. Your gonna have to offer two different harnesses, Pre and post 88
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Old 02-02-2005, 09:49 AM   #5 (permalink)
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here is what I wanted before i went with the SDS system.

a stand alone bare bones engine managment only harness. it should do away with everything not required to make it run properly.

as you mentioned the only option I would keep would be the fuel pump relay. having the computer shut down the fuel pump when the motor is not running is a huge saftey issue.

if you are gonna make them are you going to use all new conectors or reuse the ones from old harness ?
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Old 02-02-2005, 01:36 PM   #6 (permalink)
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When I did the EFI harness on Formula Toy #27 I built a harness for engine only. I wasnt to bad to figure out, there are a lot of wiring redundencys in the stock harness. I did remove all of the the relays in the system. I ended up running 2 fuse blocks, one that was hot off the battery and one hot off the ignition switch. The ignition is relayed. From the ignition fuse block the ECU and fuel pump are powered up along with the alt. The reason I did it this way is so when the driver shuts down the ignition it all dies, that and I can wire kill switchs inline in about 2 minutes for saftey.

For the starter, it is "Hot wired" and just goes through a 60amp switch.

Its came out pretty nice one wire loom about 5/8" thick that is going into the intake and one about a 1/2" thick going to pick up the coil, alt, fans, lights, and line locks. I'll post picks after Saterday, we will be installing the sheet metal, gauges and then that fawker is done, just needs paint.

As far as the stock senders go, I left the wiring intact and plan on using these for electronic gauges, some prefer anolog but whatever floats ur boat
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Old 02-02-2005, 06:01 PM   #7 (permalink)
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well thers is some good input, i was hoping for a bit more, but okay.

my tentative plan is to modify a stock harness first.
figure out what is where and how much can be lost.

what i am thinking is that most of what is the "engine harness" will stay intact. i am thinking at this point the only thing that can really be lost from this portion is like the egr shit and a/c idle up circut, i guess the 4wd indicator and reverse switches are there too.

i think about the only thing i'll need out of the main loop is the ignitions stuff, the MAF stuff the O2 stuff and check light.


the other thing i was thinking is as far as the pump safetys
i think this could be easily switched to an inertia switch like on the fords if you were so inclined.


so depending on how much changes will determine the next step.
if i can source the connections and things for a decent price i could build or modify exsisting harnesses, or core them to people.
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Old 02-02-2005, 06:38 PM   #8 (permalink)
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Holy perfect timing batman, I just got on here to search just this, BARE minimum wiring for a buggy/(In my case Truggy) to run a 22RE. I defantately cool with seperating everything else, since, like most buggies, I dont need that crap.
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Old 02-02-2005, 07:14 PM   #9 (permalink)
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I started going through my harness just recently, and am just about to the wiring part of my buggy project. Here's where I've gotten so far, went through and eliminated all of the obvious BS (heater, gauges, lights, etc.). My plan from here is to hook up what I have left and then continue eliminating/sorting from there. But in case I fawk it all up, hurry up and get these made . This harness is from a '90.

Before:


After:


Trash:
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Old 02-02-2005, 10:42 PM   #10 (permalink)
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I went through mine awhile ago. I have posted all my wiring finds and what goes where and what can be cut and where it should be spliced, etc. Check this thread: /forum/toyota-truck-4runner/316661-22r-22re-swap-faq.html . Aaron is also working on some stuff. PM me with questions, etc. I'd like to help make this happen.
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Old 02-05-2005, 07:32 PM   #11 (permalink)
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i have been messing around this week with this project.
right now i am down to about 12 wires. (mind you this is out of the body harness)
again the engine part of the harness will need to remain almost entirely intact.
i am trying to get ahold of an engine harness now to tear down.
this is not including any sending units, with the exception of the tach wire.
i kept all the check connections and the circut open relay.

i plan on looking into sourcing the connections for an idea on production costs.
also i am planning on hooking this up to one of my trucks this week for testing

here are a couple pics

view of remaining connections


pile of before
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Old 02-06-2005, 05:41 PM   #12 (permalink)
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Off Road Solutions will make you a harness for the older EFI setup using you core...The setup he makes for the newer EFI uses all new plugs and wires..He told me the reason for using a core for the older setup is that they stopped making the plugs for that system
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