Another wiring question

[IDriveFords]

Ok with the help of write-ups and whatnot im pretty damn sure I can do the wiring myself considering I work as an electronic tech. So I got the soldering irons, solder etc etc... My questions is, after pulling out the KA harness, I noticed the KA has 3 connectors after the firewall inside the car (1 goes to the ECU, 1 is the dash harness connector and the other is what I'm questioning). The SR merely has the ecu connector and the is the dash harness (I know you have to splice the KA's dash harness in). So wtf is this 3rd connector for since the SR's harness doesn't contain it at all and it's not included in any writeup ive found. It was a ***** getting this thing unhooked to pull out the KA harness. I had to jam my hand up behind the heaters blower motor and try and push down the clamp and tug (tore my hand up). So my question is: wtf is this plug for since the SR harnness contains nothing of the sort past the firewall I'm assuming its optional. I got all the under the hood connectors down pact but this one has me stumped. It looks important but its not talked about in any write-ups and yes it is part of the KA harness. I just spent an hour fidling with the search option and couldn't find anything about this connector. Anyone know?Thnx-Rob-

[Steve Lloyd]

http://mysite.verizon.net/nrgo...4.htm

Don't know which SR you have, but this link tells you that the plug you are stuck on is the ECU power relay. I am doing an S13SR into an S14, so I used this link very closely, that's why I know the plug you are talking about. Hope this helped, I am far from an expert, just trying to pass onwhat I've found through my studies.

[IDriveFords]

**** I forgot to mention its an s13 ka24 to an s13 sr20det. Should be simple but this extra plug is worrying me.

[Steve Lloyd]

S13 into an S13, try this out.............http://srownersclub.com/faq/index.asp#harness

[IDriveFords]

yea thats heavy throttles write up. It mentions 3 plugs near the stock battery location but not 3 plugs behind the firewall. I need to unravel the KA harness and find out if I actually have two harnesses that are still taped together. I'll try to get pix of the KA next to the SR harness to show you the mystery plug and maybe you can identifiy it that way.

[Hijacker]

Are you talking about that little 2 wire plug that isn't hooked up to anything? The FSM lists it as a diode. There's also a slightly larger plug that connects to some A/T bits. The only other two plugs I have listed behind the firewall are the dash plug and the ECU plug.

[IDriveFords]

its a large plug about the same size as the dash wiring plug but its not down near the ECU. It's kinda buried up in the corner above the ECU and you really gotta work your hand in there to get it disconnected. It's definetly part of the harness because it came with the rest of the harness when I pulled it through the hole in the engine bay. I'll try to get pix of the SR and KA harnesses side by side and circle the extra plug but I need to find someone with a dig camera first. It's a rather large plug and looks important, I still havn't unraveled the factory tape tho so it may just be taped to the KA harness and I can put it back where it came from. I dunt wanna start hacking up the harnesses till i find out wtf this plug is tho.

[Jasong]

Mine had it also. I think tenkawa is right about it being a transmission plug The best I could figure out, it goes to the ascd.

[IDriveFords]

ascd? So it has something to do with the auto transmission then? I'll still try and post a pix of it. When I pulled it thats what I figured since most the write ups deal with manual-manual swaps. I need do need to figure out how to jump out the transmission lock tho.

[Jasong]

What do you mean "jump out the transmission lock".

[Hijacker]

ASCD is the Auto Speed Control Device (cruise control). It's not on the EFI harness. The ATCU is though.

The one thing I failed to ask earlier, and I was just assuming all along, your car started life as an auto, right?

[Jasong]

Yeah I looked at the wrong diagram. f5 in the FSM.

[IDriveFords]

yea my car is/was an auto. In autos theres a lock that won't let you put it into gear unless your keys in the igni and foots on the brake. I heard you gotta jump this locking mech out when you swap to a 5 speed? Is that correct?

[itsnever2fast]

more wiring is required for the auto to 5 spd swap to get the car to start, and to get the key out of the ignition i think. can anybody elaborate? i have not yet done this

[Hijacker]

yea my car is/was an auto. In autos theres a lock that won't let you put it into gear unless your keys in the igni and foots on the brake. I heard you gotta jump this locking mech out when you swap to a 5 speed? Is that correct?

the only thing you need to jump is the park/neutral safety switch (which is what you're talking about) my tutorial on 5 speed swaps that's conveniently linked in my sig covers it. But just scavange the plug off your old A/T lower harness and just connect the two wires coming off of it and then plug it in. That will trick the car into thinking it's in park/neutral for startup.

more wiring is required for the auto to 5 spd swap to get the car to start, and to get the key out of the ignition i think. can anybody elaborate? i have not yet done this

nope. the only thing you need to do wiring wise aside from reverse lights is to jump the park/neutral safety switch. The thing that will lock your key in the ignition is the green shift lock box in the driver side footwell. It bolts into place where the clutch pedal does, so just ziptie it out of the way or tuck it up somewhere, but you have to leave it plugged in.

[IDriveFords]

I'm doin a complete SR swap so won't I be eliminating the KA's lower engine harness and using the SR's? Which means I'd have to bypass the ignition lock somewheres else. I dunno maybe I'm just confused. I do get what ur saying about the tricking it into thinking its in park with the KA harness but how does this work if I'm using the SR harness. Won't those plugs be switched out entirely?

[Hijacker]

well, the shift lock is an A/T thing, so the manual lower harness won't have the plug for it. So take it off the KA A/T Lower Harness. All you're doing is cutting the plug off of the KA harness and then soldering the two wires together and then sticking the plug into the chassis plug receiver.

[IDriveFords]

IC, so the plug itself won't be connected to any part of the wiring harness and will act as a jumper to jump out the ignition lock. Is this what your getting at I'm kinda slow.

[boost_creep]

as far as the connector ur talkin about under the dash.its for the auto trans.dontworry about it.just wire the dash wires and the ecu,thats all you need.as far as bypassing the nuetral safety switch,so you can start the car,you gotta jump the connector on the lower harness thats still ine the engine bay.its the bottom most connector on the side of the fuse box on the passenger side.good luck.

[IDriveFords]

Cool thats what I figured. I took pix anyway so I'll post em up so ppl can see which connector im talkin about.



Everything in that pick is all the plugs that go inside the car. The circled one was the one in question but I guess its for the auto transmission. I guess I'll start hacking into the harnesses tomarrow. Any words of wisdom when doing the harness conversion?