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im trying to install a autometer tach in my car and i am trying to figgure out if the stock motor is a 1 or 2 pulse... im kind of lost but i think its just a one pulse... also IIRC there is a wire in the back of the cluster that you can tap in to, what one is that? and is it a pos. or neg. from the coil?
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Mike, AKA the sasquatch
1990 LX, bp+T/g25mr, 9psi dynoed at 194HP, turbonetics t3/to4e 57trim, haltech E6X standalone, 550cc injectors, turbosmart wastegate, synapse BOV, walbro 255 fuel pump, aeromotive FPR, AEM wideband, 3 inch exhaust, huge FMIC, 9LB flywheel, 6 puck clutch and way more parts that im forgetting i installed lol... -
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thanks. but im still trying to figgure out if its a 1 or 2 pulse motor and if that wire that leapin is talking about is POS. or NEG. ?Originally posted by MONSOON View Post
Mike, AKA the sasquatch
1990 LX, bp+T/g25mr, 9psi dynoed at 194HP, turbonetics t3/to4e 57trim, haltech E6X standalone, 550cc injectors, turbosmart wastegate, synapse BOV, walbro 255 fuel pump, aeromotive FPR, AEM wideband, 3 inch exhaust, huge FMIC, 9LB flywheel, 6 puck clutch and way more parts that im forgetting i installed lol...Comment
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it's clipped for a four cylinder already.---------------------------------------------------
The Jester - Midwest Festiva Inc., Missouri Chapter
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what do you mean by '1 or 2 pulse'?
It's a ground signal, one pulse per ignition event, so two pulses per crank revolution (4cyl).Jim DeAngelis
kittens give Morbo gas!!
Bright Blue 93 GL (1.6 8v, 5spd) (Hula-Baloo)
Performance Red 94 Aspire SE (Stimpson)Comment
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was it in a festiva, or somthing else? did you have it on the neg or pos of the coil? every tach ive hooked up is on the pos. but autometer says to go to the neg...Originally posted by festivaWES View Post
Mike, AKA the sasquatch
1990 LX, bp+T/g25mr, 9psi dynoed at 194HP, turbonetics t3/to4e 57trim, haltech E6X standalone, 550cc injectors, turbosmart wastegate, synapse BOV, walbro 255 fuel pump, aeromotive FPR, AEM wideband, 3 inch exhaust, huge FMIC, 9LB flywheel, 6 puck clutch and way more parts that im forgetting i installed lol...Comment
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almost all modern tach connect to the negative side.Originally posted by sasquatch View Post
The only tachs that connect to the positive side, that I'm aware of, are current sensing units, connected in series with the coil positive.Jim DeAngelis
kittens give Morbo gas!!
Bright Blue 93 GL (1.6 8v, 5spd) (Hula-Baloo)
Performance Red 94 Aspire SE (Stimpson)Comment
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ok i figgured it out... i just ran a wire from the tach hook up under the hood (which is a neg.) then up to the tach... and done
works great!!!
Mike, AKA the sasquatch
1990 LX, bp+T/g25mr, 9psi dynoed at 194HP, turbonetics t3/to4e 57trim, haltech E6X standalone, 550cc injectors, turbosmart wastegate, synapse BOV, walbro 255 fuel pump, aeromotive FPR, AEM wideband, 3 inch exhaust, huge FMIC, 9LB flywheel, 6 puck clutch and way more parts that im forgetting i installed lol...Comment
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