Wiring can be eliminated by measuring the DC voltage drop (power lost) from the battery (+) terminal to the starter terminal. Place a multimeter probe on the battery (+) and the other probe on the starter terminal. Crank the engine and watch the multimeter. If the meter registers more than 0.5 volts - wiring could be a contributor to your problem. Or get your jumper cables out and go directly from the starter to the battery.
__________________
Chug a lug a luggin’ 5 miles an hour
On my International Harvester
|