This morning I purchased an Ultima starter from O'reilly's and installed it. I know, I know. What was I thinking? This is my only car and I was in a pinch.

After installing the starter, I started the car 4 times within a minute, no problem. I go into the house for lunch, and an hour and a half later go to start it and get nothing from the turn of the key. I jump it at the fender terminal and get nothing, run a wire directly from the battery to the starter and get nothing. What's going on? Bad starter?

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'81 300SD