Car started exhibiting the same symptom as with the original relay - dropping the pump feed & monetarily cutting out. I was afraid that using the original base could lead to issues, so I made a new new from a couple of Volvo relays.
I wired in the 3 diodes and a 2ohm resistor.
Had incorrectly marked the 86c feed to the coil on the power relay (tied it to 86 as well, NOT good), so I had to redo that
corrected wiring
Male pin I'm using for 86c is also on the outer left instead of inner left, so a bridge on the relay socket was needed. There are male pins in the 85 location (bottom right) on both bases. I had already made a bridge on the relay sockets, to allow the use of the Fiat version L-Jet relay, so both are connected to the ground circuit.
The next problem was that the male pins are shorter length than the ones used for the Datsun/Bosch L-Jet relays, which meant they were not fully seating in the relay sockets. This meant the connections would come & go, took me awhile to figure out that was the problem. I shaved back the base on the relays - that wasn't enough, so I had to shave the small rise around each pin also.
That made the overall male pin depth close enough to the factory length. With that, the bases stay properly seated and no connectivity / functional issues with the adaptor after driving it this afternoon.