new battery switch,battery 1 no response

[Achilles]

I just installed a replacement perko battery switch, thought the old was bad. After reinstalling making sure the banks were in working order, check battery 1, no power from switch, #2 pos. battery makes connections (battery 2 is non starting battery) in the All pos. same connection good, which I am sure it all on batt 2. check to make sure batt was fully charged,getting a reading of 12.6 on volt meter, same on batt 2.

I am thinking it's a bad ground or possible bad positive connection. I ran jumper from from positiive to switch and ground to engine bolt still no juice to ingition. after checking lead I have some corrosion on battery lead (hot) on the switch side only. check with meter and got a reading 12.6 same the battery

After deciding the cable was bad tried running a jumper and still rec'd same no power from switch to ingition. tried my back up battery (spare) fully charged still nothing.
could there be a fuse or circuit breaker or something else that I missed.
seem that battery 2 is working and sending power to ingition. still confused on why battery 1 isn't sending

 

[Don S]

Re: new battery switch,battery 1 no response

Moving this over to the Electrics, Electronics and Trolling Motors (not engine) forum.

 

[wire2]

Re: new battery switch,battery 1 no response

You will get a good reading (12.6) even through a resistive connection with nothing happening. Ohm's law applies when there's current being drawn, as to a starter or even just the ignition and blower. Take voltmeter readings when trying to start and you'll find the bad connections.
Remove the + clamp from the battery, is there a hard black film on the post? That's resistance. Any white or green residue on any exposed wiring? Resistance.

 

[jtexas]

Re: new battery switch,battery 1 no response

What kind of engine you trying to start there, achilles? Have you got any power at all to the keyswitch - does the electric choke work? Most outboards have a 20-amp inline fuse on the 12V line between battery and keyswitch, usually located port side of the powerhead.