MEVI install - Where to get tach signal from ECU.
#1
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MEVI install - Where to get tach signal from ECU.
I have my MEVI installed and everything works fine when I activate it manually with a toggle switch.
I'm now ready to install the RPM swith. I originally was going to put it under the hood and tap into the #1 coil.
After reading many posts on this, I've decided I like Dave B's (and other's) idea of putting it in the fuse panel where it's protected from the elements and easily accessed.
My question is, where do you tap into the ECU to get the Tach signal?
'95 SE, automagic.
Dave B - You out there this morning?
I'm now ready to install the RPM swith. I originally was going to put it under the hood and tap into the #1 coil.
After reading many posts on this, I've decided I like Dave B's (and other's) idea of putting it in the fuse panel where it's protected from the elements and easily accessed.
My question is, where do you tap into the ECU to get the Tach signal?
'95 SE, automagic.
Dave B - You out there this morning?
#2
when i was installing my nitrous kit.. i had the very same question.. so i searched and then found a thread that told me exactly what color wire was the RPM wire coming from the ECU.. then i tapped it and ran it back to the engine
#3
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Location: Shreveport, LA
Posts: 272
Originally posted by SprintMax
when i was installing my nitrous kit.. i had the very same question.. so i searched and then found a thread that told me exactly what color wire was the RPM wire coming from the ECU.. then i tapped it and ran it back to the engine
when i was installing my nitrous kit.. i had the very same question.. so i searched and then found a thread that told me exactly what color wire was the RPM wire coming from the ECU.. then i tapped it and ran it back to the engine
#5
Pull the plastic cover off the ECU harness, its the RED & YELLOW wire. that goes to Coil #1. this is where i grabbed my RPM source for the VI.
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
i wish i had the wiring diagram for the ECU harness, but maybe you can search and see if you can find it. its in the upper middle left of the harness--RED & YELLOW. (Coil #1)
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
i wish i had the wiring diagram for the ECU harness, but maybe you can search and see if you can find it. its in the upper middle left of the harness--RED & YELLOW. (Coil #1)
#6
Originally posted by Requin6
Pull the plastic cover off the ECU harness, its the RED & YELLOW wire. that goes to Coil #1. this is where i grabbed my RPM source for the VI.
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
i wish i had the wiring diagram for the ECU harness, but maybe you can search and see if you can find it. its in the upper middle left of the harness--RED & YELLOW. (Coil #1)
Pull the plastic cover off the ECU harness, its the RED & YELLOW wire. that goes to Coil #1. this is where i grabbed my RPM source for the VI.
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
i wish i had the wiring diagram for the ECU harness, but maybe you can search and see if you can find it. its in the upper middle left of the harness--RED & YELLOW. (Coil #1)
I really suggest getting a Chilton's manual for $15. It's a life saver for the price and they give you the wiring diagrams. You'll really learn a lot about your car.
Dave
#7
Originally posted by Requin6
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
[/B]
word of caution--the space inside that plastic cover is TINY and you wont be able to use a wire tap, you will have to strip the wire back and solder your wire coming off the harlan in there.
[/B]
Too bad on '99s you can't pull from the ECU without killing the tach needle
I ended up pulling the rpm signal from the coil and running the wire inside the cabin so the Harlans would be protected from the elements.
-hype
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