Fuel Inector help

[Roy]

Im pretty sure the electrical connector on an injector doesnt have a polarity, is that right???

When installed in the fuel rail the electrical conector faces the block...correct?

Stick with me there is a question in here somewhere.

Now the plug means there is only one way to connect back up, so no drama there, only i have to splice into the loom between the power supply and the injector.

According to the wiring diagram, one electrical spade of the injector connection goes to the ECU, the other from the 12V battery/starter motor/alternator.

If someone can tell me which spade (A or Z on the attached picture) runs to where, then you can save me having to do trace the wiring thru the car, calling for the removal of all the electrical insulation around the std wiring.

Thanks for any help you can provide

PS yes i know the injector in the picture is not suitable for an RB, but it gives a good view of the connection i am referring to.

[Busky2k]

I dont think it'll make a difference, as all the ECU is doing is rapidly opening and closing the circut.... But sorry, I couldnt find anything in my workshop manual about polarities. (altho it is a 200SX) so would assume it should be ok either way.

[RBVS]

I would say no. (most things with polarity will be marked +,-)

can you disconect the batary and meter (bell out) from one pin to ecu or batary

[Steve]

Roy, when I did my injectors, a mechanic mate who was helping me at the time said just make sure I connected the power to one contact, and the signal to the other - I was told at the time it didnt matter which way, but do them all the same way, ie, power to A and signal to Z or vice versa. Seems to be working so far:)

[Roy]

But i have to wire a resistor pack in line with the injectors. Now irrespective of where i solder the resistor pack, as long as the ECU see the right impedence then i should be right...but the GTR has it wired between the injector and power supply, so would like to do the same in case there is an issue with damaging the injectors by having the resistors downstream instead of upstream.

Making sense? Doesnt matter i have surrended this weekend to get it done

[Steve]

It will be interesting to hear how it all goes:) Good luck

[\\\Wiktor]

if the std connector looks lite this:

x

OO

x it the guide for the connector

the connector to the rigth should be wired to + and the other to the left should have earth(-).

If im not totaly lost rigth now it should also have a + marking on the side.