Secondary injectors resistor S4 1993.5

[stevefh]

Hi all, Section ML sheet 4 ,what does the sec inj resistor do? It has ow in to 6 and ou out from 4 to sec.injs. on to ecm. I can see it on no other wiring diagrams.What do the pins 1,2,3,5,7,8,9 do?

[Vulcan Grey]

The secondary injector resistor   just limits the current flowing through the secondary injectors, which are high impedance @14 Ohm, and wired in parallel. 

The other pins on the resistor are not connected.