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Just did my 2003 F250 6-spd today. I mainly wanted to install a starter kill switch.
Just removed the two wires needed for the starter and routed to a toggle to prevent crank.
Plugged the remaining four wires back into the clutch switch to continue using the cruise control.
Wondering now why I didn't do this 15-years ago..
Thanks for the nice write-up
Domenic
Which two wires did you remove? Did you leave the defective switch in place and the harness plugged into it?
Just did my 2003 F250 6-spd today. I mainly wanted to install a starter kill switch.
Just removed the two wires needed for the starter and routed to a toggle to prevent crank.
Plugged the remaining four wires back into the clutch switch to continue using the cruise control.
Wondering now why I didn't do this 15-years ago..
Thanks for the nice write-up
Domenic
Which two wires did you remove? Did you leave the defective switch in place and the harness plugged into it?
I made this mod a few days ago, very simple. However, my color codes were a little different. I butt spliced (used high quality heat shrink butt) the red w\green stripe to what looks like a solid yellow. I didn't see the need to solder (no other external connections on the vehicle are soldered).
It's the two wires on the left in the photos. And yes, I have dogs;-)
No, the switch is necessary for the cruise control system to function normally. Also, if you just leave the switch hanging without bypassing the switch the truck will not start. The clutch switch is a two pole switch. That means it switches two separate loads. In this case one load is normally open, that means electricity does not flow through, and one is normally closed, that means in it's resting position electricity flows through it to complete the circuit.
The cruise circuit is normally closed when the pedal is not pressed. When it is opened the cruise control shuts off.
Conversely, the started circuit is normally open, electricity cannot flow to the starter relay when the pedal is not pressed. When it is pressed the circuit closes and electricity can flow to the starter relay if the key is turned. By bypassing the switch and connecting the two wires that are normally not connected you are making so electricity can always flow from the ignition switch (key) to the starter relay, regardless of the position of the clutch pedal, and therefor the clutch switch.
So, since I can put the two wires (pink with blue stripe in my case) together and start the truck and the other two (green) should be for the cruise? And they should be left not touching in order for cruise to work, correct?
02-06-2019, 07:42 AM
