Help! Need to hot wire my car!

An unusual one I know, but the wiring on my s2000 start button has failed. I didn't fit it and the instructions are beyond me. It was wired in so that position 3 on the barrel doesn't work so I have no back up..... Any help appreciated as the car is stuck in a pub car park!

I'm assuming these jump start devices still require to crack in the usual way? The battery should be ok

Cheers!

Sent from my Pixel 2 XL using Tapatalk

Have you tried looking at the wiring diagrams and info available in downloads in the community tab at the top of the page?