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Auto to t5 what colour are the two wires to bridge together. 

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Mon Jan 11, 2010 11:09 pm 
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cjh wrote:
Tried to get a 7,000 ohm resistor today at d**k Smith electronics store and they said they don't come in that size,.. :shock: .... so they gave the missuses a 7,300 ohm resistor.
Will this work or is it too higher resistance??????

Anything between 6.5kohm-7.6kohm should be okay.
Measure your resistor with a meter before using, as the tolerance might tip it above or below these figures.
Go for a 6.8kohm resistor - they're a common value.

As for wires - the Neutral safety switch has 4 wires:
-starter solenoid, earth
-two wires for resistance
The colours are normally the main clue - black for earth, etc. A meter and some simple tests usually sort it out without too much hassle.

 

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Last edited by snap0964 on Mon Jan 11, 2010 11:16 pm, edited 1 time in total.

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Mon Jan 11, 2010 11:16 pm 
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cjh wrote:
I can only find a purple wire, and NO purple/white wire for the bridging....which other wire is there....Its an ED.

on the round plug in the engine bay there should be a purple and purple/white. and blue and blue with yellow i believe (yes an ED) all the other wires (7?) from the plug should be yellow and green with different stripes. put the 6.8k on purples and 1.2k on blues. i did this when i thought my manual ecu was stuffed during conversion but was coil problem.

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Tue Jan 12, 2010 1:55 pm 
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OK....solved it....the purple and purple/white are on the g'box harness side, not the engine bay harness side. On the engine bay harness side there is a purple and a black/white.
The purple/white lines up with black/white.

 

 

Attachments:
File comment: Engine bay harness plug
IMGP3732.JPG
IMGP3732.JPG [ 283.04 KiB | Viewed 27 times ]
File comment: Auto g'box harness plug
IMGP3730.JPG
IMGP3730.JPG [ 285.62 KiB | Viewed 29 times ]

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Tue Jan 12, 2010 10:18 pm 
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TROYMAN wrote:
pin 30 and pin 46 on the ecu..
And to confirm if necessary, do a continuity check of those wires to these pins - black/white is signal earth (pin46), not to be confused with chassis earth. Pin 30 will be different again at the ECU - pink/green from memory.

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Sat Jan 16, 2010 12:29 am 
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How do we go about the netral switch? I've bridged the two purple wires but I still have to have it in nuteral to start it, (I'm using a manual ECU) Can I short the nuteral switch or has it got somthing to do with the computer?

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Sat Jan 16, 2010 1:52 pm 
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if your running a manual ecu you dont need to bridge anything. the auto loom plugs in to the round plug and rectangle plug in the engine bay where as the manual only uses the rectangle plug and round plug remains empty. the rectangle plug should have wiring to the speedo drive plug and then 4 others, 2 to neutral switch and 2 to your reverse light switch. read the tech doc and it talks tyou though stripping the auto loom back and cut out the "manual loom" for use.

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Thu Jan 21, 2010 9:02 pm 
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Ooo! this is helpful :D

 

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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Mon May 03, 2010 10:51 am 
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just to add my 2 cents worth, my mpfi conversion running an auto ecu I had to use 2.5K ohm resistor between pin 30 and 46 to get it between 2.9 and 3.1 volts ( neutral) at the ecu......just read another post and seems 7Kohm puts it at PARK voltage which is probably the same horse different paddock.
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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Mon May 03, 2010 11:01 am 
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03turbo wrote:
just to add my 2 cents worth, my mpfi conversion running an auto ecu I had to use 2.5K ohm resistor between pin 30 and 46 to get it between 2.9 and 3.1 volts ( neutral) at the ecu......just read another post and seems 7Kohm puts it at PARK voltage which is probably the same horse different paddock.


Yea pretty much..
it is always best to check the voltage at the ecu after fitting the resistors..just to make sure...
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 Post subject: Re: Auto to t5 what colour are the two wires to bridge together.
Posted: Fri May 07, 2010 1:12 am 
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My 2 cents, I did the resistor thing and it worked but since a j3 chip was cheap and it's easy to find a manual ECU bin, I just "converted" my ECU to manual. That way everything worked like a stock manual without having to manually configure everything. At the time, what bothered me was the fact that the auto ECU has a torque truncation table (for autos) in it which I read reduces torque at some stage. I can't remember now, but I don't have to worry about it anymore..

 

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