1998 Dodge Neon malfunction in elect circuit in cylinder#1

I have a rough idle and even worse when the engine has a load on it(in gear) here are the fault codes:P0201, P0202, P0300, P0302. I have changed plugs, wires, air filter, ASD relay, cleaned the TB.I can disconnect the injector connectors on #1 and #2 and have very little change in the way the engine runs.I tested the injectors and they all read around 12 to 13 ohm. And can I use a jumper wire from injector # 3 to # 2 and #4 to #1 just to see if it is the connectors?Or not?