I ordered a shift light for my 86 stock V6. It's basically just a big red light that comes on when you get close to readline. It's something I need because when I get excited I tend to go in to the red.
Anyway, it shows that it needs a connection to one of the power wires form the coil. I guess this is how it knows what RPM's your at. Does anyone know what wire that is inside the cab? I'm pretty sure the power for the coil at the fuse box is just a constant 12 volt, and not the wire the shift light needs.
The shift light doesn't need power from the coil. It needs power from a 12V ignition source. It also needs a tach signal, so it can monitor engine RPM.
Also note that the Fiero already has a shift light. However, the ECM controls when it comes on. It can come on at different RPM, depending on how hard you're accelerating. Most aftermarket shift lights don't do that. You just set it for a certain RPM, and that's when it comes on. So don't be surprised when your aftermarket shift light and the stock shift light don't match.
Also note that the Fiero already has a shift light. However, the ECM controls when it comes on. It can come on at different RPM, depending on how hard you're accelerating.
Exactly. The factory shift light is for best "economy" driving... hardly what the OP appears to be after.
The shift light doesn't need power from the coil. It needs power from a 12V ignition source. It also needs a tach signal, so it can monitor engine RPM.
Anyway to get that Tach signal from inside the car?
BTW. The shift light has an adjustable setting on the back. You set it to the RPMs you want a light to come on at, and you don't have to worry about blowing a rod in redline.
lol. Exactly. I removed that bulb when I got the car when I was 16. I'm 40 now.
Heh heh... ya, I hated that stupid thing as well. Pulled the bulb first chance I got. I kept thinking that the damn Check Engine Light was coming on... plus I don't like being told when or what to do.
Heh heh... ya, I hated that stupid thing as well. Pulled the bulb first chance I got. I kept thinking that the damn Check Engine Light was coming on... plus I don't like being told when or what to do.
lol yeah that stupid arrow would come on anytime you went over 2.5k RPM.
Originally posted by SP1200: Anyway to get that Tach signal from inside the car?
The obvious answer would be the tachometer. According to the service manual, it's a white wire on pin #18 of connector #3. I don't remember which one is connector #3 (the gauge cluster has 3 electrical connectors). But the pin numbers are stamped onto the connectors. So just look for one with a white wire on pin #18.
