Am having trouble starting my truck noticed a black wire came off somewhere down toward the starter or the block it is made into the positive side of the wiring that goes to the battery.

The manual has the location or check the car club out if you are on a budget

I suspect you have a short somewhere between the ignition switch and the instrument panel fuse block. Here is what you can do. Unplug the igntion switch connector. Remove the ST fuse and the IGN fuse. Connect a test light to the POSITIVE side of the battery, Probe pin 3, black with white wire and pin 4, red wire at the ignition switch connector. If the test light illuminates that wire is shorted to ground somewhere between the switch and the fuse block.

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There are three posts on the starter solenoid. Two large ones, and one small one. One of the large ones has a braided wire going into the starter. leave this one alone. On the other large ones, you will connect the positive battery cable as well as the large red wire coming from the alternator. The small purple wire connects to the small post on the solenoid. Lastly, on the engine block pointing the opposite way (towards the drivers side) is another stud and you will connect the negative battery cable to it.
Make sure that none of the wires can touch the other posts coming out of the solenoid.


4: Negative Battery Cable
6: Purple Starter actuator wire - 12V when key turned to start.
9: Positive Battery Cable
10: Positive Cable from Alternator

There can be a starter lock-out which requires your to foot press the clutch or the brake pedal. But without lights you have a different problem.

Check your fuse block for power. There is a Master link somewhere under the hood and they usually put them close to the Positive side of the battery. The Master link is like a fuse only in wire form. You will also find a heavy wire that supplies power to the fuse block. Often the fusible link and the feed wire to the fuse block are the same wires.

Your Alternator, battery, etc. will test good all day long, but you need power in the fuse block.

Turn the Ignition to ACC and notice if the radio has power or turn the key to run and notice if the Brake lights work when you press the brakes.

If you have power there, then troubleshoot the wire to the starter relay. Most likely when you turn the ignition key(start) you will not have power going to the starter relay like you should. You can also test the coil Positive wire with the key in RUN position.
It should have power.

That's all I have for you.

Basic electrical problem . loose connection on a ground circuit ,high resistance . There are no magical fixes for automotive electrical gremlins . Finding electrical wiring diagrams an voltage drop testing the electrical circuits is the only way to find the problem .
When the ignition switch is placed in the Start position 12 volts is supplied through the Park/Neutral Position Switch or Clutch Pedal Position switch to the switch and coil side of the Starter Cut Relay. If theft is not active the Theft Deterrent Module grounds the control side of the Starter Cut Relay closing its switch. Power then travels to the coils side of the ST Relay with ground at G200 closing the ST Relay. Power then flows from the Main fuse in the Fuse Block - Underhood through the switch side of the ST Relay and then to the S terminal of the Starter Solenoid. Ground is found through the engine block.

How to voltage drop test starter motor circuit

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Knowing how the systems work is one of the first priority ! Learning how electrical systems work .
Learning how to read wiring diagrams an use them for pin pointing areas for testing .
Check for DTC'S - diagnostic trouble codes , this should be one of the first steps .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
How to Use Multimeter to Troubleshoot Common Problems
Free wiring diagrams here
http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on engine then under subsystem click starting . I would start with a voltage drop test of the main battery cable to the starter motor.

Starter Voltage Drop

Sounds like you may have a loose connection somewhere...I would start by checking the negative battery cable as this seems to be the most common connection that is lost...follow the black lead down to where it connects...usually on the engine somewhere, and then remove it , clean the area where it goes with sandpaper or a wire brush and then reconnect...the positive cable goes to a solenoid that is triggered by the ignition switch..make sure these connections are tight also....the other lead on the side of the solenoid goes down to the starter..check and clean this also...hope this helps

That is a direct short between your hot wire and ground

the positive battery cable goes to the starter and the black box.there are some other wires involved with the pos cable. if your trying to replace it with a generic cable you cause more problems down the road than its worth.get a factory one at the dealer it will be easier to install and wont create problems

black (negative side) to ground. Other (red) should go to starter or starter relay

1) Disconnect cable from negative battery terminal
2) Raise vehicle front and suitably and safely support.
3) Remove cover from starter wiring (small right angle-like black plastic cover).
3) Loosen large wiring harness (underneath starter) so that it can be moved out of the way.
4) Remove outer nut and wires from solenoid.
5) Remove outer nut and wires wires from starter.
6) Remove two (2) screws retaining plastic flywheel cover and cover. You will need to do this - otherwise you will be unable to remove the front bolt holding the starter to the engine block. This cover is a small black plstic piece located where starter penertates the flywheel cover.
7) Remove (2) bolts retaining starter to the engine block. One is accessable towards the front of the starter/vehicile and the other (long one) is towards the rear of the vehicle - just behind the frame cross member.
8) Position starter so that if can be dropped down (flywheel gear part first).
9) Reverse the above instructions to install the new starter/solenoid