"Cursitor Doom" wrote in message
...
On Tue, 05 Apr 2016 17:51:18 -0500, amdx wrote:

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.

At 200A, even one miliohm of connection resistance is going to waste 40W
of battery power.

Even "not that bad" dodgy connections can waste a fair bit of power.

Unless the engine bay is immaculately clean - that heat usually produces a
whisp of smoke.

40W is more than a lot of soldering irons, they'd smoke if they had traces
of oil on them.