David1994 Posted June 29, 2020 Share Posted June 29, 2020 Ok so im replacing the ignition switch on my 94 Ford l9000 to a universal switch. Problem is i can't find a wiring diagram anywhere. 3 wires theres red/green, black/green and yellow/black. Does anyone know wich one is the battery, ignition, acc? Quote Link to comment Share on other sites More sharing options...
alex g Posted June 29, 2020 Share Posted June 29, 2020 Is your old switch still hooked up? Should be labeled on it but if not you should be able to get through it with a test light. Quote Link to comment Share on other sites More sharing options...
Freightrain Posted June 29, 2020 Share Posted June 29, 2020 Using the original switch, you should be able to operate it and see what makes contact in "start" or "acc" position. The wire with 12v to it should be the battery. There is another website, www.ford-truck.com and it has a big truck forum. They have a few parts guys that have access to micro fiche and factory information. You may have some luck there if you can't figure it out. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
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