Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Is this possible? Eco LEDs on rev counter

Eric839 · 05-24-2015, 08:42 PM

Hi there!
I had this idea and wanted to check with you guys to see if it's possible.

I once drove a 1993 Toyota Corolla that had 2 LEDs on the rev counter to help you monitor your fuel consumption. I'm colourblind but it must be a red one and a green one

Anyway, I'd like to make something like that in my car. I know it's not very helpful but it would be a nice project for me. In my mind, the red LED must be connected to the injectors and when fuel is injected it lights up and the green one lights when no fuel is injected, in deceleration, right?
What do you think?
If this is how it works, would you help me with a schematic so i can test it?
I leave a picture of the instrument panel so you can see what i'm talking about.
Thanks a lot!

05-24-2015, 08:42 PM	#1 (permalink)
Eric839 EcoModding Lurker Join Date: Mar 2014 Location: Portugal Posts: 12 Rover - '99 Rover 400 Si 90 day: 35.92 mpg (US) Thanks: 2 Thanked 0 Times in 0 Posts	Is this possible? Eco LEDs on rev counter Hi there! I had this idea and wanted to check with you guys to see if it's possible. I once drove a 1993 Toyota Corolla that had 2 LEDs on the rev counter to help you monitor your fuel consumption. I'm colourblind but it must be a red one and a green one Anyway, I'd like to make something like that in my car. I know it's not very helpful but it would be a nice project for me. In my mind, the red LED must be connected to the injectors and when fuel is injected it lights up and the green one lights when no fuel is injected, in deceleration, right? What do you think? If this is how it works, would you help me with a schematic so i can test it? I leave a picture of the instrument panel so you can see what i'm talking about. Thanks a lot! Attached Thumbnails