Electrical What Is This Plug ???

[knr1313]

the blue and black next the each other what are they?
i know one is the ground

 

[jrichker]

the blue and black next the each other what are they?
i know one is the ground

More important question; what are the wire body and stripe colors and the car year? They help identify the circuit name and function.

 

[Mustang5L5]

Where on the car are we looking?

And what year car?

 

[knr1313]

thanks for the replying this place is awesome !!
1987 gt next to batt under starter solenoid

 

[jrichker]

thanks for the replying this place is awesome !!
1987 gt next to batt under starter solenoid

Still no wire and stripe color - without that, there is very little chance of getting you the correct answer.

 

[knr1313]

trying to figure out what the blue plug does
it has a green with red stripe and a black wire going in and out

 

[jrichker]

trying to figure out what the blue plug does
it has a green with red stripe and a black wire going in and out

Take your choice...
LT GREEN-PURPLE FUEL PULSE TO MESSAGE CENTER 139
LT GREEN-RED KEYLESS DOOR LOCK SWITCH DATA BIT 2 TO MODULE 79
LT GREEN-RED STOPLAMP SWITCH FEED 10
LT GREEN-RED EMERG. BRAKE WARNING LAMP TO EMERG. BRAKE SWITCH 162
LT GREEN-RED SEQUENTIAL LH REAR CENTER TURN SIGNAL LAMP 443
LT GREEN-RED (COIL) OR (ACCY) TERM OF IGNITION SWITCH TO ALTERNATOR REGULATOR (IGN. TERM) 904
LT GREEN-RED REAR SENSOR (HIGH) TO MODULE 518
LT GREEN-RED AIR SUSPENSION SYSTEM GROUND 577
LT GREEN-RED LEFT CHANNEL SIGNAL OUT 798
LT GREEN-RED C.B. RELAY DRIVE 722

I would check it to see if it had 12 volt power that turned on and off when you turned the ignition switch to Run and them Off.