I have replaced the neutral safety switch on my 96 Plymouth Voyager, Grand Caravan. The new switch has 3 male prongs that size wise do not match up with the old one. I bought a new connector that matches the size of the new switch but the wire colors do not match. I improvised a home made connector to get it on the road but it started acting up again. Today I tried matching the colors to my improvised setup but that did not work out. Now I can get it in gear but the lights to show what gear you are in do not work, neither does the tach or fuel gauge. I need some help on this one!
Unless you broke into more wiring than you should have, the tach & fuel gauge should have nothing whatever to do with the neutral safety switch.
Shortly, the neutral safety switch requires only two contacts that should "make" connection when the vehicle is either in Park or in Neutral, but no other time. That connection should energize a relay under the hood that makes it possible for your key to energize the starter solenoid and crank the engine. It (the neutral safety switch) MAY additionally have anything from one to a dozen other connections - to indicate the shifter position, for example.
Some vehicles use two switches, discrete from each other, to function as a neutral safety switch and a shifter position ("PRNDL", pronounced "prindle") switch. Yours apparently has a PRNDL switch separate from your neutral safety switch... so the third contact is somewhat of a mystery to me.
Try to return everything under there to as close to original as possible, and we'll start over with this. If you cut any wires, splice them back together. If you spliced any wires, take them back apart.
To fulfill its purpose, a neutral safety switch needs to have some power coming TO it and some power coming back OUT of it. It acts as a valve for that power - P or N open the valve, all other positions close the valve. So... you need to determine which two contacts are CONNECTED when the shifter is in P or N but are not connected any other time. You'll want a meter, I'm pretty sure. to find those two switch contacts. Identify them, make a note on a slip of paper, take a photo with your phone or camera, whatever. Remember those two.
Now find the connector that used to connect to the old switch. One of its contacts will have some amount of electricity (probably 12V or near to 12V) on it WHEN THE KEYSWITCH IS TURNED TO START. Have an assistant sit there holding the key in the start position while you check for voltage. Voltage should NOT be present on that wire when the keyswitch is NOT in the start position. Remember that wire by color. Write it down on your slip of paper, take a photo, remember it.
You have only one wire left to identify - thats the one that your neutral safety switch uses to energize the relay under the hood, and it's easiest identified by making a quick temporary jumper from the START wire (which you just identified) to each of the other two contacts in the same connector WHILE your helper holds the key in the START position. Transmission really in P, of course, so your helper doesn't inadvertently start the vehicle and turn you into squished sausage. So... just touch your jumper from the START wire to each of the other two wires, one at a time. One of them will trigger the starter motor and the vehicle will try to start. Remember which wire that was - by color, photo, whatever.
Now you have your two valuable wires and you know which are your two valuable connections on the switch. Connect your two valuable wires to the two valuable connections and be happy. Please make the best possible connections by the best means you can muster. You won't want to do this again, at 11:30PM on a Sunday night, in a November rainstorm, in a mud puddle, with lightening crashing around near you, while the zombies slowly creep nearer and nearer to your hiding place. You can see them, you can hear them, and you really need to get away from them NOW. You want it to start NOW. Make that a good splice.
SOURCE: 1998 plymouth voyager gauges on dashboard not
well start by checking all fuses but it sounds like a bad ground wire somewhere on the car
SOURCE: 1998 Plymouth Grand Voyager instrument cluster problem
There has been issues with the solder joints on the PIN connection to the gauge cluster. The issue being that over time thru vibration and such one of these solder joints will fail (happened on or 1999) you can repair this though. You will have to remove all of the trim from around the driver's side dash board, this will include the trim towards the center of the dash. Once these pieces are remove you'll need to remove the gauge panel (I believe (4) allen head screws) carefully bring the panel and release the wire clip from it. Looking at the back of the panel, where the plug was, carefully with plenty of light look for one of the pins to have a failed solder joint. It will be very faint however the failed joint will be a fine dark line around the pin. To correct use a small soldering iron and reheat this solder until it wants to flow, let it cool and reassemble.
As I fore mentioned I had the exact same issue as you are describing, our is a 99. The most tricky part is the dash, take your time with it.
I hope this may have assited you,
Tom
SOURCE: '99 Plymouth Grand Voyager fan switch issues
The problem is not with the switch, it's the blower motor resistor. The resistor is usually located in duct work near the blower motor. It will have 4or 5 wires going to it and is held in place with a couple screws. These things generate heat, so they put them in duct work so the fan blows air across them to keep them cool. Sometimes the plug gets hot and melts, you should be able to buy the resitor and the plug with wires (pig tail) from an auto parts store or a dealer. The resistors are usually about $50 the pig tail is about $30.
SOURCE: 2000 plymouth voyager speedometer not working
the transmission sensors(in or out)went bad .i had the same problem.change the two in and out sensors on the tranny then take the battery terminal off for ten seconds and it will reset your computer and take off engine check lite. ps the sensors are under your air box.
SOURCE: 1998 Plymouth Grand Voyager.........Dashboard instruments
You have some wiring problems shorting out that is coming from the dash board so if you or anyone you know how to use a multimeter to check the wireing harnesses plus check any connectors that might be just very touching the connector of dashboard which means a bad connection to dashboard.
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