TSDZ2 I want to add brake cutout

[Zambam]

I have around 400 miles so far on a TSDZ2 conversion on my Raleigh Mountain Tour Seneca. I would like to add brake cutout switches to the existing brake levers. I have tiny magnetic reed switches and magnets from prior projects making float switches that I can use on the brake levers so parts wise I just need the mating connector/ cable to the 3 pin brake cutout connectors (see pic) from the controller. Where can I buy it? I searched Aliexpress and all I can find is speed sensor cable for TSDZ2. Links please?

With the black lead on the common pin, I measured 4.19 and 4.65 V on the other 2 pins. Which pin(s) do I short to the common to cut power to the motor?

 

[Zambam]

Would this be compatible? https://www.aliexpress.us/item/3256806175669918.html?spm=a2g0o.productlist.main.1.1e052b58PNJ4rf&algo_pvid=693639ff-c26c-46ed-afbe-b2ecee07f633&algo_exp_id=693639ff-c26c-46ed-afbe-b2ecee07f633-0&pdp_npi=4@dis!USD!6.49!2.92!!!46.82!21.07!@2101efeb17175079367907474ec43f!12000036899429853!sea!US!3042880182!&curPageLogUid=dmqQS6wp2GHz&utparam-url=scene:search|query_from:

Cut off the threaded end part, which I assume has a normally open momentary switch and wire it to my normally open reed switches.

 

[Zambam]

This thread may answer some of my questions Brake Lever Signal Difference 2 vs 3 pin

 

[Zambam]

With rear wheel off the ground, I used throttle to spin the motor then connect a 10 ohm resistor across pin 4 (brake signal) & pin 8 (ground) per diagram below and the motor cut out. So I am good to go as far as what pins to wire the reed relay to.