Modified an existing design to allow me to use the same Molex connectors you would find in the connector for a PC fan for the adapters contacts. There is a place for a terminal block so you can make a solid temporary connection to the pins on the tracker. Probably only useful for testing purposes.

After you crimp your wires, bend the end of the connector so it matches the angle in the last image, then drop each wire into head hole so the contacts are flat along the top. Bend the wires around the outside face and after putting the terminal block in place, solder the wires to each pin. I you want you can use some hot clue to cover the exposed metal to protect them.

Molex Pin
https://www.mouser.com/ProductDetail/Molex/39-00-0337?qs=sGAEpiMZZMuQUXCJI7Y4lmVWtHHm1LDJ

Or this link if you only require a modest amount ;) Thank you jgwinner for finding the link!
https://www.amazon.com/3-Pin-Molex-Female-Housing-2510/dp/B06ZY7R299/ref=sr_1_16_sspa?keywords=molex+3+pin&qid=1550994022&s=electronics&sr=1-16-spons&psc=1

Terminal Block
https://www.amazon.com/dp/B00UAFQKMW/ref=sspa_dk_detail_7?psc=1&pd_rd_i=B00UAFQKMW&pd_rd_w=Pb0aG&pf_rd_p=f0dedbe2-13c8-4136-a746-4398ed93cf0f&pd_rd_wg=hZjLJ&pf_rd_r=5TE7M6V7GMV0SZGDDG6R&pd_rd_r=76ecd0b4-1af2-11e9-afb0-8330b119e8fb

If you're interested, the motor I used is down below, just a small 3v vibration motor. Not sure how effective it is in anything, but it works!
https://www.amazon.com/gp/product/B0087Y95X4/ref=oh_aui_search_asin_title?ie=UTF8&psc=1