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International Automotive Technicians Network
Re: 05 Mercury Grand Marquis shift interlock
Posted to Technical Theory Forum on 9/8/2013

Unfortunately, this is a series parallel circuit. It goes to more than the solenoid. I did have a fused light in place of the fuse to let me know if the short to ground showed up when I was wiggling and unplugging. I will get another shot at it Monday. I know ... Login to read more.