^ you mean the one all the way in the back to the left if looking at your picture?
I too wonder what that plug is, maybe it has the triggers? |
Yup, the one sitting all the one in back right next to the ignition coil pack standing straight up. If you believe the color coding it has exactly what we need:
gnd - black 12v - white/black tr14 - brn/ylw tr23 - brn In the wiring diagrams it looks like the white/black wire feeds the main relay's coil, but nothing else. I guess it's a pretty easy test if the main relay still works after unplugging the connector. My setup used the connectors off the coil packs with the resin removed, but it's hard to get my hands back there to unplug those connectors. It would be nice getting one of those connectors... |
I wonder then why everyone who has that plug there didnt use it for the coils. Certainly easier to cut there then at the coils.
edit: I looked at the madracki diagrams, they didnt show much but that could be the place where the +12v splits for the main relay and engine fuse. I guess as long as you cut after it, then it can be useable. I could be wrong. |
Hey Scott, did you get my PM?
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f
sounds like there is enough info here, to start looking into doing it myself thats awesome. genius
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Is anyone using high-temp rated wire like TXL/GXL for these? If so, where did you source your wire?
And what's the consensus on wire gauge? If so, how did you arrive at that number? |
Just use whatever the ignition coils have running to them. Probably 18 gauge will be plenty. At least thats what im gonna be using, I dont want to go buy another 4 spools of wire for like 2 feet worth of wiring.
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Originally Posted by thebeerbaron
(Post 217857)
what's the consensus on wire gauge? If so, how did you arrive at that number?
Originally Posted by Saml01
(Post 217877)
Just use whatever the ignition coils have running to them. Probably 18 gauge will be plenty. At least thats what im gonna be using, I dont want to go buy another 4 spools of wire for like 2 feet worth of wiring.
#18 is fine for triggers. |
Originally Posted by Saml01
(Post 217877)
Just use whatever the ignition coils have running to them. Probably 18 gauge will be plenty. At least thats what im gonna be using, I dont want to go buy another 4 spools of wire for like 2 feet worth of wiring.
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if you know any electricians just score some wire from them, they are usually pretty cool guys
my brother in-law gives me the hook ups, pretty much and kind of wire i want FREE but i used 12ga for power/ground and 16ga i believe for trigger/tach |
Ok, I'll look for some 12ga, that's about what I calculated I'd need to carry the current with minimum drop, it just seemed like others were going with smaller.
Is there any worry about heat on top of the motor? I see some of you running split-loom and I'm amazed that hasn't melted. Maybe I'm just a fanatic, but if I had easy access to TXL/GXL, I'd be running that. |
12 ga? The wire feeding the coil stock is 1/10th the size. Seems like a lot of overkill. Very much the same concept as putting a 6.5" downpipe on your turbo, feeding a 2.25" exhaust. Not to mention it's like doing it on a 150 hp car.
I'd shoot for something in the ballpark of the same size Toyota used. No smaller, but around there. |
20awg on tach, 12v, ground and trigger ftw!
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rather safe than sorry eh!
FWIW, my brother in-law (licensed electrician) recommended 12ga on power and Ground only...just to be safe |
12ga is fucking huge for this application. I used 14ga and it was stupid big, but it's what I had on hand. 16ga or 18ga would suffice I'm sure.
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Really, toyota runs them off VERY small wires. They wouldn't spend the kind of money it takes to develop a COP system with warranties and all the rest, then use wires like that.
12 guage wire is rated for 41 amps. FOURTY ONE AMPS. Are you kidding? 1 milliohm per foot. 20 guage is rated for 11 amps, and it would take 1000 feet of it to total only ten ohms of resistance. And that's 11 amps continuous. Do what you will, but I stick by my advice. Use what toyota used. http://abefm.smugmug.com/photos/252079866_uzPMX-XL.jpg See the wires coming out of the coil? They are PUNY. See the giant ground strap I have? It's 16 guage, and the toyota wires would fit inside of the insulation of that with room to spare. Spend your time/money/etc on heat sheilding. |
Originally Posted by AbeFM
(Post 218091)
12 ga? The wire feeding the coil stock is 1/10th the size. Seems like a lot of overkill. Very much the same concept as putting a 6.5" downpipe on your turbo, feeding a 2.25" exhaust. Not to mention it's like doing it on a 150 hp car.
I'd shoot for something in the ballpark of the same size Toyota used. No smaller, but around there. |
Originally Posted by whaaamx5
(Post 218150)
rather safe than sorry eh!
FWIW, my brother in-law (licensed electrician) recommended 12ga on power and Ground only...just to be safe |
Think I might start my wiring harness for my COPs this weekend. Lets see how much spare time I have...
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ok, my confusion has been in the AWG table, whether this is considered power transmission or chassis wiring. i'm not an EE, I don't know the difference.
i finally got time to pull the coils. damn those things are packed back in there. yeah, the OE wiring is really tiny. I think I have enough 18awg lying around to do it. Thanks all. |
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