Simpson 420cc 4gpm - thermal relief valve - how to set up bypass to buffer?

https://www.jnequipment.com/shop/brands/general-pump/general-ts2021-slap-happy-fully-plumbed-pump-5-6-gpm-3500-psi-2/?gclid=Cj0KCQjwvYSEBhDjARIsAJMn0ljpbq-LVs_5PWHnea2PQ2vZPcAL25sQrny6Pr-FXmewO-ybeVRIScwaAtBVEALw_wcB

I found this and was thinking of doing the same with my simpson. I am the guy who has a second unloader on my simpson 420, against forum advice, and no catastrophes yet. I have run it this way for 2 years and it has allowed me to not be on the trigger all the time but it is not advised to do this, but I was cheap when I started out and just haven’t switched it yet. But again, it is not advised to run a second unloader that cost $85, just saying.

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