I have a 2003 accord 2.4l. I just replaced the starter, alternator and battery all new. Now when I drive about a 1/2 mile the gauges stop working (speedo, gas, RPM etc..) then the windows move slow and dash lights start to dim. I have no idea where to go from here and any ideas would help a lot.
Thanks !

 

take the alternator in to where you purchased and have it rechecked to see if the alternator is charging. sometimes a rebuilt unit is faulty. make sure your battery is good also.

 

Your vehicle has a smart charging system.
Meaning that when the ELD (electrical load detector) senses a load, it will tell the ECM to Tell the alternator to produce a higher charging voltage
It doesn't seem to be doing this.
Would check the connector to the alternator.
Make sure it is clean and making proper connection

I don't have a schematic of the charging system for your vehicle.
But, usually five lines (wires) goes to the alternator.
One is from the battery. One from the ignition and is hot when key is in the on position.
The other three come from the ECM.
One sends 5 volts to the voltage regulator
Another signals the ECM about the state of charge
Another determines charge mode (high or low charging)

If alternator, and battery have been changed then I would next investigate the wiring to and from the alternator and ECM and ELD.
Schematics would be a big help.

 

The alternator and starter were new not rebuilt and the battery is new as well. As avisitor posted I feel its most likely a wiring issue. I have a chilton for this car but Ive never had to deal with wiring before. Thanks for the advice. I'm looking into the wiring now.