Fuel pump is getting no power trying to figure out what color the negative and positive wires are so we can hotwire it to something else

you stated pump kicks on put clutch in and no start so what would you hot wire [[and dont hotwire anything ]]]which causes more problems and in this case is probably pump not problem ----theirs a clutch safety to start in manual trans which that or ignition system problem such as failed starter --ignition switch --etc have vehicle for any possible trouble codes

Hello. The positive polarity (+) color wire for the fuel pump on your Dodge truck can be any color except black. The negative polarity (-) color wire is, usually, black. Those 2 main fuel pump wires are a thicker gauge than the other wires. Good luck and keep me informed; if you want to.

Grey wire hot.Black wire ground.

Why do you want to hot wire the fuel pump ? Did you check the fuel pump relay ? How about the inertia fuel cut off switch ? Do you know what inertia fuel cut off switch is ? Go to http://bbbind.com/free_tsb.html free wiring diagrams ! Also suggest you watch this video on fuel pump electrical circuits ! how they work an how to test . Fuel Pump Electrical Circuits Description and Operation Watch for ford's , well , watch it all you mite learn something !

One reason the fuel pump is not getting power is a defective camshaft sensor. When the camshaft sensor goes bad, the computer in the car will not allow power to the fuel pump and no power to the spark plugs too. Why would you need to hotwire something that is already wired correctly in the first place. Some part is defective. You just cannot bypass the problem to fix it.

Wish you had stated make/model here.
Before 'hotwiring' fans - test to see if power is actually going to fan(s) - on most cars with two fans - one is ran from engine temp sensor, while the other is run from the A/C system (and for example on Nissan Maxima will not run unless A/C is actually on).
To test get a simple test light - with car at temp test the positive to negative connection at the wire harness connector (should be near fan). Also, test positive to a good ground point. This way you know if power is going to fans.
To 'hotwire' an individual fan - unplug fan from harness - using same grade of wire (2 wires one from positive side of battery to positive input of fan harness, 2nd wire from negative side of connector to a known good ground). - fan should run at that point - if it doesn't and power to harness, replace fan.

I would also check your fuses, if all your fuses are ok, then I would go back to the fuel pump double check you wiring. Take a multimeter and make sure your getting power to the pump, check to make sure Positive, Negative and Ground wires are in/connected to the correct connection/spot.

If none of that works, I can at least help you narrow down your problem area, if you are getting power to the fuel pump - your issue is either with your wiring or the pump is faulty -- If you are not getting power to the fuel pump your issue is back at the fuses boxes or there could possible be something wrong with your ignition (doubt it though)
--If your getting power to the pump and your positive that you have is wired correctly, I would take the pump back and try to exchange it, or have them test it.

Hope some of that helps!

POWER GOING TO FUEL PUMP NOT TO FUEL PUMP.YOU CAN BUY AND REPLACE FUEL PUMP WIRES SEPERATELY.SOUND LIKE OLD WIRES HAS A OPEN CIRCUIT OR POOR GROUND.

im not sure of the color wires that should be powered but have you checked the fuel pump relay under the hood? also check that you have a good ground at the pump dont check just the positive voltage check for negative (ground) also

REMOVAL & INSTALLATION
See Figure 1

1. Relieve fuel system pressure.
2. Disconnect the negative battery cable.
3. Raise the vehicle and safely support.
4. Drain the fuel tank.

Fig. 1: The electric fuel pump has an in-tank design

1. Disconnect wiring from the tank.
2. Remove the ground wire retaining screw from under the body.
3. Disconnect all hoses from the tank.
4. Support the tank on a jack and remove the retaining strap nuts.
5. Lower the tank and remove it.
6. Notice the position of the filter for replacement. Support the pump with one hand and grasp the filter with the other. Rotate the filter in one direction, then pull off of the pump. Discard the filter.
7. Disconnect the fuel pump connector, on wagons it will not be necessary.
8. On all models excluding wagons:
   1. Place the sending unit on a bench upside down, then pull the fuel pump downwards to remove from the mounting bracket. Tilt the pump outwards and remove from the pulsator.
9. On wagons proceed as follows:
   1. Disconnect the negative terminal nut and lead (black) from the pump.
   2. Disconnect the positive lead (gray) from the pump, then loosen the coupler clamps.

To install:

1. On all models excluding wagons:
   1. Assemble the rubber bumper and insulator onto the pump.
   2. Position the fuel sender assembly upside down and install the fuel pump between the pulsator and mounting bracket.
   3. Connect the pump electrical connector.
2. On all wagon models:
   1. Position the fuel sender assembly upside down and install the coupler and coupler clamps to the inlet tube, but do not tighten at this time.
   2. Install the pump between the coupler and the mounting bracket, then tighten the clamps so that 5-8 teeth are engaged.
   3. Attach the positive lead (gray) to its positive terminal with the nut, then attach the negative lead (black) to the negative terminal.Always install a new filter when installing a new pump.
3. Position the pump filter on the new pump and push the outer edge of the ferrule until it is fully seated.
4. Install the sending unit.
5. Install the gas tank and check for leaks.
6. Reconnect the battery cable.