Question about 1994 Nissan Pickup

1 Answer

Need 12v trying to get 12v only when running/if in need of relay,wher can i get the low volts to activate the relay only when the truck is running...?

Posted by on

  • butch welch May 11, 2010

    Are you trying to use a relay for a pilot to carry a heavy load.. Why do need this relay.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Try from the alternator

Posted on Jan 20, 2009


Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 1993 E-350 club wagon wont start Code: 542 =


Replace the TCM to fix the converter clutch problem.. The line 12 volt is direct power from the battery and 7 volts out the I am suspicious off as I think that the coil for the relay is partially shorting out to give the 7 volts. As for the other wire 12 volts in would be ok but if there is nothing out unless it is a relay that has not closed because the relay coil has not activated correctly.. Check the readings against a new relay.

Nov 01, 2013 | Cars & Trucks

1 Answer

Truck will not start,no fuel pump sound with key on,getting 4volts to each pump 7 volts at reset and 12 at relay,truck has spark w/starting fluid but no fuel supply


Needs 12v to run pumps. Bad grd at pumps?. or possible bad relay try by pass relay. also some were controlled by eng oil press switch off - on try by pass and check for proper voltage. You can also by pass all devices and power pumps by 12v.

Apr 28, 2011 | Ford F-250 Cars & Trucks

1 Answer

1987 Jeep Cherokee-4.0L I6 auto tranny 4WD. Fuel pump will engage if straight wired but not if plugged in, engine will crank but not turn over, checked all relays & relaced battery cables &...


If you turn on the key and you do not hear the pump in the tank running for two secounds ( the same time your warning lights on your dash light up and goes off) then 1 you need to replace the pump or 2 it has low voltage to the pump or 3 both. I just repaired a 1987 pioneer what you need to know is the pump requires 12v at the pump, however OEM has placed an inline ballast resistor located on the driver side front engine compartment near the hood latch that is made of white ceramic with two connection both wires are orange with a black stripe. A. Check the voltage on both sides of the resistor 12v in 12v out use a volt meater - to battery + to resister if no voltes check the relay the passenger side of the engine compartment ( there is 4 relays from front to back it is no. 2 from the battery) looks like a small blue box newer relays are black, if they do not click when the key is on then your CPU may be bad or fusible link is bad If you have voltage to the resister and you have 12v in and less than 12v out your next test will be at the rear connector to the pump, three wires close to the fuel filter using a volt meater check the black wire with the orange / black stripe if voltage is less than the voltage out of your resistor then there is a bad wire in the system and a new wire is required. confirm this by jumping the battery to the pump wire black to- and orange to + the pump should run. Note. running the pump with lower than 12v will damage the pump and cause it to fail! If the pump works you can check the fuel pressure on the fuel rail, remove the cap to epose the shearder valve (looks like the valve on your tires) depress the valve stem and fuel should come out, caution fuel is under pressure have a rag under the valve to catch the fuel, if low pressure the pump is bad and/or filter is plugged Replace filter first recheck this test then replace pump and recheck. Note!!! when the pump is out of the tank recheck the voltage at the pump this will show true voltage at the last connector it needs to be 12 volts! Reconnect the pump wire the stock wire and check, on the pioneer I worked on was 4 volts so I rewired it to a new battery source using the orange /black strip wire that had 12v in to resistor as a trip wire for a 65 amp power relay. The owner noted an increase in overal performance " it now has more power now" hope this helps

Feb 23, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

I have a 2008 f250. one headlight (driverside) low beam is not working. I have checked both fuses 10amp and they are good. The flash to pass works and both lights on bright, right and left come on. the...


I am sure that a 12 Volt bulb means it needs 12 Volts. Since you changed the bulb to the other side, why not check the voltage in the working side and see what it reads?

Sometimes the turnstalk can interfere with the lighting. Try pushing the Hazard switch several times and see if the headlights straighten out. I read that too much goes through the turnstalk and that using the Hazards can derail a contact inside the stalk.

If this does not help, you may need a headlight relay in the powerbox. One contact may be dirty or burned down for the wire it feeds. Unless you have a single wire feeding both low beams to the headlights, I would bet the left and right side come out directly through the relay.

Oct 20, 2010 | Ford F-250 Cars & Trucks

2 Answers

Heat ac fan quit blowing fuses ok what next?


Hi. You will need to acquire a volt meter, and test the blower motor for proper voltage(12v). If the motor is registering a 12 volt current(at contacts with the switch activated), simply replace the fan motor. If not, replace the fan relay, or resistor switch.

Nov 26, 2009 | 2005 Pontiac Grand Prix

3 Answers

93 stang fuel pump wont run


Do NOT wire 12v directly to pump!!! the battery can punch out quite a bit of amperage without a fuse wired in and can either fry the pump or melt the wiring and start a fire. only getting 7volts at the pump suggests there is a resistance build up somewhere. Check the terminal connections for corrosion. Could also be issue with the computer. Check engine come on?

Aug 09, 2009 | 1993 Ford Mustang

1 Answer

No spark, only 7.5v on coil +ve.Starts with ext.12v supply.


Measure battery voltage when cranking, if below about 10v then could be the problem. Not enough information for a full diagnosis, so presume the ext 12v supply was on the coil? Try this diagnosis procedure: Put voltmeter on battery + and on to coil + and measure volt drop when cranking. It should be small. Keep voltmeter on coil and keep probing all the way back through any points you can get to the coil wire until you get to the ignition relay, keep checking volt drop until you get to the ignition switch. You should be looking at a fraction of a volt all the way until there. If more, you have a dodgy connection or relay. Sometimes, easiest way is to rewire from where you know there is a low volt drop as finding a broken cable in a wiring loom is nigh impossible. I've had to do this a couple of times before on my classic cars.

Jul 15, 2009 | 1994 Jaguar XJ6

3 Answers

I have replaced my fuel pump and cannot get it to run. I measured the voltage at the main connector and I have 7 volts. I have only 3 volts at the pump. Do I need a new sending unit? What should the...


Disconnect your battery. Switch your meter to ohms. Don't let the battery terminals touch the metal body. Put the negitive meter lead on the body and the positive meter lead on the one that is only 3 volts at pump. There should be no continuity. If there is, then there might be a short.
Next try putting one meter lead on the 7 volt main connector and the other on the 3 volt supply side. There should be little resistance. If resistance is high then you might have a break in the ciuciut.

I hope this helps.

Jul 11, 2009 | 1995 Mazda 626

1 Answer

Ford 300 -starts, but quits when you let go of the starter


With the ignition turned on, measure the voltage on the coil + terminal, it should be 8 to 12 volts, if there is nothing or very low ( ie 2 - 3 volts) then I would suspect the ballast resistor, )which may be part of the wiring from the key switch to the ignitionpack or coil.)

Nov 04, 2008 | 1985 Ford F150

Not finding what you are looking for?
1994 Nissan Pickup Logo

Related Topics:

31 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...