Continuous duty house disconnect to latching

[153stars]

I thought I may have a charging issue but was starting to get voltage drop at house disconnect. It dawned on me took voltage a reading at batts and flipped it switch several times and got the actual voltage reading. The one installed may still be original. I do still want to keep the disconnect I can leave lights on for entering. I know it's there and how to easily bypass it if it does.
I know most RV type latching solenoid disconnects use a reversing momentary dpdt at the door to send opposite polarity for each function.
But this one seems to use single momentary. Cole Hersh is decent name brand. I'm considering replacing it with this one and switch by door with momentary. It may save a few dozen continuous watts. The question am I missing something to prevent using it.? First link has diagram. Amazon has Q&A section. I figure it works pulling latch past contact and mechanically latches and unlatches using same polarity.

SPST 12V 110A Latching Solenoid – Cole Hersee

https://www.amazon.com/dp/B001FQMZQU...ing=UTF8&psc=1

[twinboat]

Lots of RVs are using this one.

[153stars]

Don't I need DPDT momentary switch at door to use this one.
I'm trying replace continuous duty that has single throw on / off now. I think that leaves one wire short at door to use it.
EDIT...I suppose I could grab a pos. or neg near door panel there tons of wires under passenger arm rest. I'm not sure if current switch breaks pos. or neg. I thought this maybe an easier option and a quick swap .

Originally Posted by twinboat

Lots of RVs are using this one.Attachment 340021