I think you're right.
I started to do a voltage drop test when the key is turned from segment to segment along the circuit to the starter and here are my results:
From Starter Ground (mounting bolt) to Bat NEG: -4.5V
From Battery NEG to Chassis Bolt Near Battery: -.04V
From Battery NEG to Engine Crankcase Ground: -4.5V
- That's a HUGE drop am I right?
- And does this signfiy that that grounding cable from the battery to the engine crank (which happens to be the damaged one in the above picture) is most likely why the starter isn't engaging when the key is turned?
- And if I have to replace it, how do I remove it from the car without removing the entire wiring harness (since more than one line go through the rubber grommet near the battery)?
- Any other tests I should do?
I removed the non-factory modules from beneath to dash to eliminate them from the equation. They were some sort of alarm system.