My 5 speed wagon gave a fit for the last few days. The solenoid died as all Eagle Solenoids die and I quick put on my brand new never used spare. That didn't work at all. I finally put the old one back on, the same solenoid that had just died. This time I ran a new ground wire from the block directly to a big hole drilled into the base of the solenoid. It works perfectly and crisply now.
I got sparks and occasional starter kicks before adding the ground wire. That's totally normal for this problem.
The solenoids simply need 12V to the top forward post and ground to the bottom to work. If you know you have a strong 12V to the top post, which I checked with an old SX4 hatch release button, and it doesn't work than you must not have ground. Automatics get ground from the post, which has a very
crimp connector that barely conducts from a network of
tiny wires with terrible ends going back to the
problematic Neutral Safety switches. Manual transmission solenoids like this one get ground soley from the back bracket, which in turn only gets ground by two very tiny very rusty
old screws with a very small contact area to rusty sheet metal going to
unreliable body ground straps. The system doesn't stand a chance at working reliably. A great number of Eagles have been sent to the crusher for this flaw.
Stock solenoids are horrible until you drill a honking huge hole in the base and run the biggest ground wire you can to it. Works great now. You'll also notice in the pictures that I replaced all the rings on the power side of the solenoid. Those are notorious for breaking internally and the rubber hiding it from view. They are oddball wires with very tiny cores and very thick rubber sheathing because they are designed as fusible links that will sacrifice themselves in the event of a short.
I replace every automatic solenoid with a manual one without the post in all my cars immediately upon taking ownership. In ten years I've never accidently lurched my automatic Eagle forward by starting it when it wasn't in Park already. I'm confident I never will. I have however started my stalled Eagle while driving countless times. It is a huge assistance to be able to turn the key without shifting into neutral. I despise the Neutral Safety Switch and will not tolerate it limiting my control of my vehicle. Do not lecture me on this being unsafe. I highly recommend this modification to everyone.
First picture shows the new hole and bolt I drilled right through the base of the solenoid:
The second picture shows the other end of the cable grabbing the ground at the engine block:
This picture shows the jumper I made for testing and remote starting. Push the button and the starter turns. Leave the key in the ignition turned to the run position and hit this button, the car will start: