wiring a electric fuel pump to ignition switch

[george worley]

I need to know what color the wire is on the back of the ignition switch that is hot when the key is on. the truck is a 68 Ranger F-100. I am having trouble following the wiring diagram.

[BobbyFord]

There is a 3 wire plug coming off the switch that should have an empty port. I would use that wire to trigger a relay to run the electric pump.
Why do you want an electric pump?

[george worley]

I have had the pump on a toggle switch with a relay from the battery for a couple of years and now I have decided to power it from the ignition switch. My truck sets for weeks and it started easier when I could turn on the pump and prime the carb. before I started the engine. It seems todays fuel evaporates quicker. The engine is a 390 with a 750 holley .

[BobbyFord]

I see.....

[Thunderfoot]

Wire you want to activate your relay from the ignition switch should be "Black with a Green stripe" and there should be as Bobby said a 3 port plug that you can use a bullet connector to plug right in.

[george worley]

Thank you Bobby Ford and Thunderfoot for the information.

[Thunderfoot]

Dang I thought I added this to my post but must of forgot to submit it... to late I guess
Anyway, here is what I wanted to add; Connector (F) in this drawing is the one that Bobby and I are talking about. http://www.fordification.com/tech/wirin ... rpanel.jpg