| [ Total Views: 527 | Total Replies: 4 | Thread Id: 39974 ] |
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 baybuscamperkid
Compulsive Aussie Vee Dubber
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| posted on June 1st, 2005 at 05:31 PM |
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how do i wire a tacho?
just wondering there i am meant to run the input wire from on a tacho? tried the coil and it read at idle but every time the revvs went up it petered
out. anyone know there i should be getting the signal from?
Reimagined/Recycled/Upcycled Cool
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aggri1
A.k.a.: Aurel Griesser
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| posted on June 1st, 2005 at 05:39 PM |
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Mine's on the coil, works OK. It's a 4cyl Volvo tacho, fits ...ok... in the spare dash hole instead of a clock. Perhaps the impedance or
resistance of your cable is limiting the signal - since it happens at speed (I'm thinking some kind of capacitance effect like where the system
can't respond quickly enough...). Maybe try another wire (mine's a 4 core phone cable, the idea being that I could hook up a temp sender or
something (three other somethings) at some stage).
Cheers, Aurel.
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pete wood
A.k.a.: figure itout
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| posted on June 1st, 2005 at 08:54 PM |
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The signal (green?) wire comes off the NEUTRAL/GROUND side of the coil.
My old analogue tacho had 4 wires.
red: 12v +ve power supply
black: -ve ground wire
white: dashlight for night time
green: signal from the engine
2 tips;
1/ make sure the signal wire is well insulated and doesn't rub on any sharp edges. If it shorts out it will ground the coil and stop the engine.
Trust me, I know. The engine just dies for no apparent reason. Took me a week to trace the fault.
2/ make sure the switch on the back for '4 CYLINDERS', not 6 or 8.
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baybuscamperkid
Compulsive Aussie Vee Dubber
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| posted on June 1st, 2005 at 09:42 PM |
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was used on the old engine in the car, so should be set right, have run a fresh wire for it so shouldnt be any problems there but will check the
connection.
thanks
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kroozzn63
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| posted on June 2nd, 2005 at 08:45 PM |
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hmm
mine came with it
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