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amdx[_3_]

On 4/5/2016 3:48 PM, wrote:
You need you wife or girlfriend or someone to turn the ignition key on and off while you check the voltage at the battery itself, and then going away from the battery to the chassis on the negative side and if ok those two places, go from chassis ground to the hot lead down the line from the battery toward the load. It must be either that the battery voltage drops under load, or that there is a high resistance somewhere in the circuit. You get to play Dick Tracy to find it.

Just to expound on the key off and on. If indeed the solenoid pulls
in, THEN is when you need to find the fault, current needs to flow to
find to find the bad connection. If you have 0.06 ohms of resistance
in a battery/starter circuit and the starter tries to draw 200 amps,
there is 12 volts dropped across your battery connection.*
You won't be able to measure 0.06 ohms.
Mikek

* yes, I'm aware if you have 0.06 ohms of resistance at the battery
connection the starter can't draw 200 amps, but...