ka-t injectors not priming!

[katillidie]

so my problem is that during initial startup the injectors dont prime to start... but if i turn ignition to the on position and take a test light and ground each injector its starts up fine and stays runnin with no problems. i thought it might be an ecu prob but i swapped ecu's and it still does not work. i check all visible grounds and everything looks like it is hooked up correctly. i am using r/c engineering injectors which was stated when i purchased that they were high inpedence so i dont need resisters but if i was told incorrectly what would happen if the injectors were low inpedence.. thanx

[Q45tech]

Measure their resistance with a volt ohm meter~ 12-ohms.

[katillidie]

could my wires on the injector harness where they were spiced in be backwards?