I used these to connect the wires to the 30 pin ECU connector. Worked great! To me, soldering taps into those tiny under-dash wires would be next to impossible. But I wouldn't even try. That made the task easier.
Nilight - 50004R 120 Pcs/60 Pairs Quick Splice Wire Terminals T-Tap Self-Stripping with Nylon Fully Insulated Male Quick Disconnects Kit | 2-Years Warranty
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