Tiger Super Six
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| posted on 2/10/06 at 12:52 PM |
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Haynes Manual Help??
Guys,
I have an electronic speedo for a type 9 box and need to know which wire is which.
I have three wires: -
Yellow
Black
Brown
I think that they are there for: -
12v+
Earth
Signal
But don't know which is which and don't want to guess. Is there anyway of telling or does anyone have a Haynes manual that says????
Mark
Tiger Avon
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mookaloid
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| posted on 2/10/06 at 12:56 PM |
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this was only recently discussed on here - try a search perhaps?
Cheers
Mark
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RazMan
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| posted on 2/10/06 at 01:06 PM |
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Ford colour trends would suggest:
Black - earth
brown - +ve
yellow = signal
Easy to check though - just connect a 9v battery (very low current so you won't melt anything) across the power leads and a multimeter on the
signal (other meter wire to earth) Spin the shaft and see if you get pulsing from the signal.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Tiger Super Six
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| posted on 2/10/06 at 01:12 PM |
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The earlier posts on this were from me - i.e. whether it could be used (which is a yes) - this is my next problem.
Razman - Thanks for idea of testing it, one quick question though, if you got the + and - the wrong way round with a battery how would you know.
Sorry, dumb on electrics!!
Mark.
[Edited on 2/10/06 by Tiger Super Six]
Mark
Tiger Avon
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RazMan
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| posted on 2/10/06 at 03:12 PM |
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quote:
Originally posted by Tiger Super Six
Razman - Thanks for idea of testing it, one quick question though, if you got the + and - the wrong way round with a battery how would you know.
Erm .... it won't work  The reason for using the 9v battery (PP3 or similar) is that you won't damage the sensor if you connect the
wrong way round as it will not supply more than a few mA. Just connect it for long enough to try it out.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Tiger Super Six
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| posted on 2/10/06 at 05:13 PM |
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I see - my thought was like a light bulb it doesn't matter which side goes to the earth/live, it will work either way.
Guess that's not the case so thanks and will try it tonight.
Mark.
Mark
Tiger Avon
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Dusty
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| posted on 2/10/06 at 09:51 PM |
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Surely
Brown = earth
Black = ign live
Yellow = signal
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Tiger Super Six
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| posted on 2/10/06 at 10:38 PM |
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quote:
Originally posted by Dusty
Surely
Brown = earth
Black = ign live
Yellow = signal
Yes, tested it tonight and that's the result. I was sure of yellow as the signal but had been unsure of the live/earth.
Mark
Tiger Avon
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Peteff
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| posted on 2/10/06 at 11:01 PM |
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Brown is always earth in Ford Sierra looms and black is an ignition switched live anywhere in the loom so that only left the yellow for you to figure
out.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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RazMan
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| posted on 2/10/06 at 11:17 PM |
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oooops 
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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