help wiring up push start button and ign switch

isenegger · #1 (**permalink**) 10-25-2009, 01:54 PM

i just got this 88 f150 4spd. the PO broke the ign rod in the column. so he screwed the ign switch to the bottom of the dash and you have to slide it to start it and turn it off. i want to put a push button to start it and a toggle switch to turn on the accessories and use it to turn the truck off. anyone got a diagram or info on how to do this? thanks!

isenegger · #2 (**permalink**) 10-25-2009, 07:13 PM

im trying to bypass this switch and use toggle switch and push button to start and run truck.

Franklin2 · #3 (**permalink**) 10-25-2009, 10:19 PM

I don't have a detailed diagram of a 88 switch, but I do for a 86, and it will take a double pole momentary pushbutton switch for the starting function, and one double pole single throw switch for the run, or two single pole single pole switches.

In 86 the power comes in on two large yellow wires.

The momentary start switch should have 4 terminals. Two will be shorted together and hooked to the yellow wires, and one of the other terminals will be hooked to a red/blue(start) and the other terminal will hook to a brown/pink(resistor bypass).

The toggle switch will have 4 terminals also. Two will be shorted together and hooked to the yellow wires. One of the other terminals will connect to the red/lightgreen(ignition and other stuff). The other terminal will hook to the black/lightgreen(accessories)

isenegger · #4 (**permalink**) 10-25-2009, 11:18 PM

i came up with this. i think it might work.

im using a universal switch like this

and wiring it up like so

isenegger · #5 (**permalink**) 10-26-2009, 01:11 PM

anyone think this would work

Franklin2 · #6 (**permalink**) 10-26-2009, 02:57 PM

I doubt that will work. Usually you cannot tie all those wires together(for example the red ones in your diagram). That's the reason they have so many sections to the original switch. You are also tying the blue wires together in your diagram also.

I predict if you hook it up like your diagram, the starter may not stop and or the engine will not turn off when the key is in the off position.

isenegger · #7 (**permalink**) 10-26-2009, 05:53 PM

i changed a few things. how about this way?

Franklin2 · #8 (**permalink**) 10-27-2009, 10:14 AM

You are still tying wires together. You need to keep them separated like the factory had them. I recommend the easiest solution would be to repair the steering column and put the factory switch back on. If you insist on switches, you will need several to duplicate the factory switch and it's function.

isenegger · #9 (**permalink**) 10-27-2009, 08:38 PM

well i gave it a shot and it worked flawlessly...the second picture i posted is how i wired it. everything works like it should. the only think i noticed is that the clutch does not have to be pressed down to start anymore. i was going to bypass that anyway. we learn something every day.