This is Nissan engine RB26DETT wiring diagram. This wiring diagram useful to your Skyline GTR R33 electronics enhances. This Nissan RB26DETT describe wires parts connection from ignition coil relay, ECCS relay, diagnosis connector, CHK connector, AAC valve, air flow meter, thermo amp, etc. The RB26DETT engine block is made from cast iron, and the cylinder head is made from aluminum. The cylinder head contains 24 valves (4 valves per cylinder), and uses a dual overhead camshaft setup.