I have an old style honeywell It has three wire slots but my old one has four wires. It was ripped of the wall so I'm not sure what wire went where.There are light green,blue,white and red,the blue,red are connected at the furnace as well as the white and green. Where and what colors do I connect...

I have installed a disconnect between my dryer receptable and a tanning bed. I want to splice the 10/3 box wire to the existing 220 wiring at the dryer. Dryer= red, black, white and bare ground wires 10/3 wire= black, white, and bare ground How do I splice these to allow the disconnect box to...

Why did juan choose the colors red and white for his crosses in 1680

I am installing a Honeywell thermostat, model RTH221. There are three wires coming from the furnace, Red, White, Blue. The terminal labels in the old Sears thermostat, model 38792010, look like they are marked: SW - White wire TM - Blue wire TM-TR - Red wire. How do I match these to the new...

I just removed my old mechanical thermostat. The wire colors were: W = white G = green R = ref Y = yellow O = Orange The rth230b has: W, Y, Rc, Rh, and G. I initially installed the Red in Rc, Y, W, and G. I did nothing with the O wire. When I turned the system on the thermostat started...