Update//questions
42 Pin 1996 plug
Pin...Circuit..Color.................Purpose
1.....16......Red/Lt Green.......PCM Power to relay
2.....11......Tan/Yellow..........tachometer data link
3.....915.....Pink/Lt Blue........Data Link Connector pin 10
4.....511.....Lt Green............Brake On/Off switch
5.....238.....Dk Green/Yellow..Power From Fuel Pump Relay (Fuel pump on signal)
6.....658.....Pink/Lt Green......Malfunction Indicator (CEL)
7.....679.....Gray/Black.........Speed output from VSS
8.....37......Yellow...............Continuous Power
9.....361.....Red..................Fuel Pump relay coil
10.....29.....Yellow/White......Fuel level sender
11....914.....Tan/Orange.......Data Link Connector pin 2
12....224.....Tan/White.........Instrument Cluster
13....676.....Pink/Orange......VSS and PCM Ground
14....91......Purple/White......Canister Vent Solenoid coil
15....926.....Lt Blue/Orange...Fuel Pump relay coil
16....39......Red/White..........Engine temp gauge
17....791.....Red/Pink............Fuel Tank Pressure Transducer (Signal)
18....359.....Gray/Red...........Sensor reference voltage
19....351.....Brown/White......Fuel Tank Pressure Transducer (Power supply)
20....199.....Lt Blue/Yellow....Transmission Controls/Clutch Pedal Position Jumper
21....140.....Black/Pink.........reversing lamps at transmission range sensor
22....107.....Purple..............Data Link Connector Pin 13
23
24....329.....Pink.................starter system at transmission range sensor
25....298.....Purple/Orange....reversing lamps at transmission range sensor
26....253.....Dk Green/White..oil pressure gauge
27....305.....Lt Blue/Pink.......Message Center pin 5
28....394.....Orange/Black.....Automatic ride control module pin 6
29....784.....Lt Blue/Black......4WD Low Range indicator
30....331.....Pink/Yellow........WOT A/C relay coil
31....32......Red/Lt Blue........starter system at transmission range sensor
32
33....463.....Red/White..........Neutral switch for GEM
34....570.....Black/White........Ground
35
36....34......Lt Blue/Orange.....PCM Power from relay
37....198.....Dk Green/Orange..Power to Pin 30 WOT A/C relay
38
39....191.....Lt Green/Black.....Vapor Management Valve coil
40....911.....White/Lt Green....Transmission Control Indicator in dash (overdrive off lamp)
41
42....570.....Black/White.........Ground
Pin 1 is power for the ignition coils, hot in run & start.
Pin 5, hot to fuel pump
Pin 8, continious power
Pin 9 is power for fuel injectors, IAC, & MAF, hot in run & start
pin 15 is fuel pump relay, this turns the fuel pump relay (coil wire) on from the ecu
pin 36 is power to trans & O2 sensors is hot in run.
pin 13,34 and 42 are ground.
pin 4 brake on/off T/C lock out
pin 12 from interment cluster for O/D on and off
pin 40 led to indicate O/D off
If there isn't power going to the solenoids, which includes the EPC, the trans won't act or shift right.
All power going to the trans goes through the EEC relay
Ok,, can you check me to see if these are correct. This is how I have all the wires wired.....
But, I had a thought... Pin 36 is power to trans & 02,, I may not have a good enough power source to power them... After looking at what I am posting,, I am thinking this. I have that hard wired from the 88 Ranger single small wire from org harness. Ill hook up a relay with separate power source...
Also,, I did connect all 3 hot wires at trans together,, no luck there, but if there is not enough power, "like you said or lack of",, this could be the problem...
Also,, do I have a EPC and EEC????? What are they and where are they?? Sorry for the dumb questions, I am still learning but the truck is running now,, just having shifting issues..
Thanks again for everyone's help!!!Chris AZ