flathead starter solenoid issues | The H.A.M.B. wwwpyjournal››The Hokey Ass Message BoardAug 26, 2011flathead starter solenoid issues. Discussion in 'The Hokey Ass Message Board' started by hotrodnomader, SS558 is early Ford insulated base to work with grounding switch from '37-48 Ford. If your starter butto switches the hot side you need one, if the switch is a Ford grounding button you need the other. Disconnect the small wire toTechnical - How to wire a flathead | The H.A.M.B.Jan 06, 2019Technical - Flathead Starter Grief | The H.A.M.B.Feb 19, 2015Technical - need help wiring flathead, positive groundOct 26, 2014Converting Flathead Starter to neg ground? | The H.A.M.B.Aug 19, 2009See more results Flathead 8BA Wiring Help - Temporary Start Up - The Ford Barn Feb 05, 2015Re: Flathead 8BA Wiring Help - Temporary Start Up Should be around 1.5 ohms and supply somewhere around 6 to 7 volts to the coil. If you are using a starter solenoid with the connections on it the best set up is "S" to your start switch/ignition switch and "I" to the coil.