Run Wire

[BogeyBoy82]

I know there are thousands of wires that recieve power when either the car is in the run position or the backwards key position (thats technical..haha)..NOT WHAT I NEED...I need a wire that only puts out "power" when the car is totally started....I need to know where this is...and exactly what wire..or close to..so i can find it with a volt meter...need it for my dual battery/isolater/ relay....thanks....really appreciate it....i dont wanna have to spend $100 on a chiltons for 1 wire.

[asepgrad98]

fuel pump..... ???

[MarkD]

Fuel pump has power when key is on.

[asepgrad98]

that is true , but only for 2 seconds

[silverado man]

I don't know of any wire that is on when just the truck is on and not on when to key is in the run position and the truck is not on.  ???  ???