A B737-200 RETURNED TO THE GATE AFTER PUSHBACK DUE TO THE ENG INDICATIONS BEING SWAPPED.

Narrative

I WAS WORKING A B737-200 ON THE NIGHT OF SEP/XX/97. I WAS WORKING A MAINT CHANGE ORDER ON A FUEL QUANTITY GAUGE BACKGND LIGHTING. TO COMPLETE THIS TASK MOST OF THE INST PANEL NEEDS TO BE REMOVED. AFTER COMPLETING THE MAINT CHANGE ORDER I BEGAN INSTALLING THE CANNON PLUGS. THE CANNON PLUGS WERE CLRLY MARKED. AFTER GETTING MOST OF THE CANNON PLUGS CONNECTED I HAD TROUBLE GETTING MY HANDS BEHIND THE PANEL TO INSTALL THE REST; THEREFORE; I HAD TO REMOVE SOME PLUGS AGAIN TO GAIN ACCESS. AT THIS POINT OF REINSTALLING THE PLUGS I INADVERTENTLY CROSSED THE N2 AND FUEL FLOW OF THE #1 ENG WITH #2 ENG. AFTER I COMPLETED THE INSTALLATION I TESTED ALL THE LIGHTS AND INDICATORS AND ALL APPEARED NORMAL. THE ACFT PUSHED BACK AND THE FLC STARTED #1 ENG. AT THIS POINT THE CREW FOUND THAT WITH #1 ENG RUNNING; N2 AND FUEL FLOW WERE BEING INDICATED ON #2 ENG. THE ACFT RETURNED TO THE GATE AND THE DISCREPANCY WAS REPAIRED. THE ACFT THEN MADE ITS SCHEDULED FLT WITHOUT FURTHER INCIDENT. BECAUSE THERE IS NO ACTUAL MAINT MANUAL PROC FOR THIS JOB TASK; YOU HAVE TO RELY ON YOUR OWN EXPERIENCE AS A MECH TO ACCOMPLISH SUCH A TASK.