Thread: wiring top feed injectors

might sound stupid, but here goes. im trying to wire in my injector plugs (msd top feed style, 50 pound hr), im using plugs off a junkyard car. anyways, how do i know which wires are positive/negative? trying to think how to word this correctly. theres 4 white wires on the injector loom(on my b13 nx), they are larger than the other 4 respective wires(talking about injector plug wires here) which are diffrent colors. does it matter which side of the new plug gets positive power? or do i just need to wire them up all the same way? hope yall understand me. bottom line is how do i wire my stuff up.

iirc... the only important thing is that they are all the same. either all whites on the left/or all on the right. Someone back me up on this tho

on the clips you cut off the wrecked car there will be a similar wireing setup, all 4 wil have 1 wire that is 1 color, then the other 4 that are a seperate color, unless its a batch fire setup but don't worry about that. The white wire on your car is the power wire, its larger than the others becaucause it carries the current of the 4 injectors (or 2 actually but don't worry about that now) while the individual colored wires carry the current of 1. So long story short, just match the clips' larger (or same colored wire) to the white wire on your car, and wire em all the same.

the injectors dont have a pos or neg some have a + on one side of the injector if so then shure wire it that way.

any solinoid be it an injector or trans shift sol or egr sol all do not have a + &-

That guy was right. JUst put all the clips on the same way and put all the thick white wires on the same side on each plug.

Brent

yup, i did the wiring all the same between each injector....worked perfect. except for the cobra maf, i have the wrong part number. im trying to get the right stuff from autozone, but they dont have the right one. but with the maf unplugged, she runs beautifully. just purrs like a kitten