Sidestand switch can't kill the engine when down and engage gear

[kaiq]

Long story short. I got a Honda bike aged over 10 years. Sidestand switch cable recently broke, so I took out the switch + cable and solder everything back. Then put every back.

 

(How it works is the switch is open when stand is down, close when stand is up. Engage gear 1 with a open circuit will kill the engine.)

 

Without connecting back to the socket yet, I ran a basic test first. Tested with multimeter buzzer and connect to the adapter ends. It buzz when stand is up (close circuit), no buzz when stand is down. This is correct. (Buzz indicates close circuit)

 

Problem comes when I connect it's adapter back to the socket. Now, the engine won't kill off when stand is down and engage gear 1. This is not right. Engine suppose to die off.

 

So I pluck out the adapter of the sidestand switch cable from the socket and try again. This time, engine got cut off when engage gear 1. This is correct.

 

Can anyone explain what went wrong?

[kaiq]

Update, did another test.

 

My cable is modded. I soldered 2 pins onto the cable in so that I can short them in case the switch broke down. I use these 2 pins also for testing.

 

Without starting the engine and stand still down,

 

1. Without connecting, I test the connectivity of adapter and socket end. Both end buzzer made no sound. This is correct.

 

2. Now adapter and socket are connected, buzzer got sound when tested on the 2 pins, meaning the circuit is closed when stand is down & engine off. Is this correct?