Thumper 10 Report post Posted January 13, 2009 Hello. I don't post very often but I do read most posts. I have an electrical glitch that I hope you can help solve. The last time I was running my car, I could not get it to shut off. I thought the ignition switch was at fault because it was so sloppy. I replaced the ignition switch/key and the door locks and when I connected the battery, the car wanted to start by itself. I removed the ignition switch assembly and ohmed out the pins as per the chart in the maintenance manual. All checked good. I then replaced the start solenoid because there was continuity across the large contacts with the switch turned off. This was providing battery voltage to the starter (I thought). However, the new solenoid also has continuity across the large contacts. I completely disconnected the ignition switch and I still have a closed circuit across the solenoid. My manual does not have a good wiring diagram of the start circuit. Does anyone have any ideas or a location online that I can print out a wiring diagram. Quote Share this post Link to post Share on other sites
mikem 13 Report post Posted January 14, 2009 Does this help? I have twenty diagrams in a "1970 Mustang Wiring Diagram Manual" if you need other areas of the car as well. Mike Quote Share this post Link to post Share on other sites
Thumper 10 Report post Posted January 14, 2009 Thanks. I'll print these out and give it a try. Quote Share this post Link to post Share on other sites
Justafordguy 10 Report post Posted January 15, 2009 The large posts should not have continuity until you turn the key to the start position. I would take the new one back and get another. You may want to take your volt meter to the parts house and check the next one first. Quote Share this post Link to post Share on other sites
Gazoo 10 Report post Posted January 22, 2009 I had a 77 Ford Econoline motorhome that had a very similar problem - you could turn off the ignition and take the key out and it would keep running. Additionally, if you left the ignition "on", but with the engine not running, it would occasionally engage the starter itself. Scared the crap out of me. The problem was a melted electrical harness running to the neutral/park/starter interlock/reverse light switch in the transmission. It must have at one time laid against the exhaust manifold and was shorting out intermittently. I replaced the bad wires and that was the last of my ghost starts. Quote Share this post Link to post Share on other sites
