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disco 1 v8 ignition key conversion to push button start.

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Hi guys i really need help with my 97 disco v8 .my key broke and i desperately need a wiring diagram of any sort to install a push button start as i am way out bush of perth WA , and only hav some switches. theres a yellow ,a white ,and white red wire to fuse box and brown and green white wire to engine bay.any help ASAP would be great. thanks in advance to all.

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If memory serves me right:

Brown is perm live

white is ign live but not while cranking

yellow is ign live and live while cranking

green/white is accessory live

white/red is live feed to starter solenoid.

With all that in mind and considering all you want is a temporary repair with some standard switches, i would connect the white, yellow and green/white together onto one side of a switch, and the brown on the other side.

Then with a momentary switch, join the brown and white/red.

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Yes as the above comments to replace the standard ignition key lock you will need two switches.

A toggle On/Off switch for the ignition to run the electric fuel pump, ignition coils etc. and those electric circuits that are activated by the key position just before cranking and

A push button to supply power to the starter solenoid. (The supply for this comes off the toggle switch)

You cannot do it with a push button switch alone.

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I've just spent 20 minutes and getting a headache from the LR wiring diagrams because you need to look at about 6 chapters just to understand how the key ignition switch operates but as Dave said:-

Brown (permanent live) into the input connection of the On/Off toggle switch

White : Green/White trace : Yellow Connect these three wires to output connection of the Toggle switch.

Bridge the Yellow from the toggle switch to the input connection of the Push Button. Connect the Red/White trace wire to the output connection of the Push Button.

To start, flick the toggle switch to ON, press the Push Button.

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Or more simple you can release the electric switch from the barrel addapt it somehow to the binnacle and turn it with a short flat screwdriver to crank then back one step to keep the engine running and back to 0 to stop if you see what i mean... you can improvise a kinda plastic ''handle'' to attach to it then you can turn it by hand through all it's positions as you wish

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White/red stripe is starter, red/white is (possibly) dashboard illumination (it is on a Defender anyway...).

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Ff the ign wiring colour codes are the same on disco1 s and defenders. Infact all of the engine wiring colours are the same across the def and disco... Made my life a bit easier in the past :-)

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Thought they probably would be, just that Boydie wrote "Connect the Red/White trace wire to the output connection of the Push Button" which I think he probably meant the starter wire White/Red rather than the dashboard lights ;)

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You're right, my bad, sorry - White /Red -- mind you those LR electrical wiring diagrams would confuse Einstein which is another reason why I tore all the standard wiring harnesses out and totally rewired my Disco without the myriad of wires for factory fitted options that my car didn't have and that I would never want anyway - as well as doing away with the Spider, MFU and other electronic devices that I could never hope to repair in the bush should they fail at an inconvenient time - such as crossing a deep creek !

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