Cliff jack question

[lespaul6]

My marshall 1960AX has a jack that has only two terminals. Can I use one with four terminals (two on each side) to replace it? and which terminals do I use? thanks!
This below is what is stock.. would I just use the same side of a 4 terminal jack?

 

[mnemonic]

The ones with four terminals are switched jacks. Plug a jack into it while looking at those blades over the top - with no plug inserted the tab on left is connected to the tab on the right. With a jack plugged in, the blades on top lift up, and disconnect from the tab on the other side.

Fine to use these in place of non-switched, just make sure you wire up the correct tabs -the ones touching the inserted jack. Use a multimeter in continuity mode to confirm if you’re unsure from looking at it.

 

[lespaul6]

thanks.. it looks like the two on the right side in the pic above are the ones to use and the other side is the shunt... I'll give it a try