My symptoms are intermittent misfires, and I already confirmed it’s not a spark issue using a timing light. I think it’s an issue with the fuel tank connections. I’m talking about the two plugs, one for the pump and the other for the fuel sender, that connect to the bulkhead through the tank cover. The plug for my fuel pump is damaged, causing intermittent and sometimes a failing connection. The plastic clip that’s supposed to hold the terminal in place has broken off, but I can’t find anywhere to purchase the plug/pump wiring alone without spending $300 on the entire fuel tank assembly with the cover, fuel pump, and fuel sender as a whole unit. The plugs for the pump and the sender are identical (except color but there’s no science as of yet to suggest that matters) so if I can find either I should be fine. A pic of the plug is below.


I tried repairing it by using adhesive to hold the terminal in place, but that isn’t working. I’m getting an intermittent connection which I believe is causing the misfires I’m experiencing. At least I hope it’s that and not my $300 injectors.

 

I have usually been able to find/source various connectors from either of the sites below.

Ballenger Motorsports

Corsa Technic


***EDIT***

I think it might be one of the following?
MTU.IL-2S-3
MTU.IL-2S-4

 

Thanks for these links, I purchased both with the 14AWG terminals and can confirm these work on my 99 Miata fuel pump assembly. Reasonably priced and quick/cheap shipping. Ballenger didn't seem to have any on their site.