1994 Mazda B4000/Ford Ranger trucklet.
Battery fully charged, switch battery cables. Starter tested good at parts store (Watched it spin up myself).
However, we are at a single click, no start situation.
Crossing the solenoid does absolutely nothing. No sparks, etc. However, both Large lugs on solenoid measure 13volts (is that right?)
Key on/off there is no difference.
As shown above, the bottom large lug (connected to starter motor by red line) should have +12V only when key is in START.
You have a busted ground, if there is 12 volts on both big lugs.
Are you sure you measured from ground to the big lugs? Like you said you saw it spin, it should be spinning with 13v on all the big lugs.
Pull the relay, get a friend and watch the voltage from the Red/lt blue line to ground as the friend puts the key in the start position.
Then pull the fuse and check volts from the yellow to ground as the friend starts it.
If one doesnt read 0v then jump to 13v during starting, then it broke or the wire is busted somewhere. You can repeat the test at each end of wires.
Same at the ignition and at the nuetral safety switch.
Might have found the issue, replacement solenoid on the starter was reversed from OEM.
Son is out there now swapping things around. The circled piece was connected to lower peg on OE (no smart comments about twisting it)
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