Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - how to connect fan light ~ visible from inside of car

doviatt · 04-23-2014, 08:31 PM

It's been years but if I remember right....I put a 12V led parallel to the fan after the relay. I found the two wires going to the fan and put a meter across them. When the car got to temp the fan kicked on showing 12V on my meter. Check one. Then ran wires from this location into the dash and hooked up the panel mount 12V LED (mind polarity). Check two.
Done.

Edit: on second thought this could have been a lamp (incandescent). No need for polarity check on this option. But won't look as cool as an led.

04-23-2014, 08:31 PM	#2 (permalink)
doviatt Master EcoModder Join Date: Mar 2009 Location: Utah Posts: 388 Grey Goose (Retired) - '89 Geo Metro LSI 4 door hatch back Last 3: 57.16 mpg (US) Tweety - '91 Geo Metro Convertible -2 Door convertible LSI Team Metro 90 day: 43.97 mpg (US) Shadow - '02 Honda Shadow VT1100 90 day: 43.46 mpg (US) Sonic - '07 Honda CBR1000RR 90 day: 42.69 mpg (US) Filmore - '84 Volkswagen Vanagon 90 day: 20.9 mpg (US) Thanks: 47 Thanked 44 Times in 31 Posts	It's been years but if I remember right....I put a 12V led parallel to the fan after the relay. I found the two wires going to the fan and put a meter across them. When the car got to temp the fan kicked on showing 12V on my meter. Check one. Then ran wires from this location into the dash and hooked up the panel mount 12V LED (mind polarity). Check two. Done. Edit: on second thought this could have been a lamp (incandescent). No need for polarity check on this option. But won't look as cool as an led. Last edited by doviatt; 04-23-2014 at 09:04 PM..