oil pressure sender leak

[califkid_66]

2500 miles first breakdown had major leak lost 1 liter oil
took a look came from oil pressure sender barely touched it and it fell off
lots of plumbing for nothing
i have another sender last picture is that oil sender to its on my crossflow i would take that one if it is

[jbcollier]

What's with all the adaptors?

There are a series of main oil gallery plugs along the block.  Lose the labyrinth and fit one sensor to one outlet.

[Grumblebuns]

All of the extraneous weight and the constant vibration at the end of the nipple to the block probably caused the  break. Thread the sender directly to the oil gallery.

[califkid_66]

i didn’t do this but i tried to figure out why different threads were the reasons and lack of space
i just plugged  the hole for now hard to get parts right now

new problem arised when i did a road test  the wire from the alternator got loose and thouched the frame stalled on side of road no more power i saw orange light in back of amp meter
tried to put it back still no power then put the alternator wire on positive of battery had power started and drove home now got to figure out this electrical problem

[Dilkris]

2500 miles first breakdown had major leak lost 1 liter oil
took a look came from oil pressure sender barely touched it and it fell off
lots of plumbing for nothing
i have another sender last picture is that oil sender to its on my crossflow i would take that one if it is

I stand to be corrected but I believe your last picture is an oil warning switch - it is not a sender for an oil pressure gauge. The electrical sender for the oil pressure gauge is that bulbous black affair shown on your second photo.
There is a lot going on there and as jbc advises, simplify it - it appears that the PO may have had an oil temp sender within the assembly - tell me, do you have an oil temp gauge on your dash or any non standard gauges?     

[califkid_66]

all original gauges no oil temperature  need to get a new oil pressure gauge with the right threads
my new problem is electrical like i explained i think i fried my amp meter