Wiring diagram for body mount voltage regulator

http://www.narva.com.au/products/browse/wiring-diagrams

use a volt meter to work out which light is connected to which pin on Ford Ranger trailer plug . Hopefully it corresponds to standard trailer wiring diagrams. Test each wire could also use a light bulb with two wires soldered to it or a 12v dc probe.
http://www.amazon.com/6V-12V-24V-Motorcycle-Circuit-Voltage-Electroprobe/dp/B00GYVS0E2
http://www.ebay.com/sch/i.html?_ssc=1&_nkw=Voltage+Detector+Tester+Pen+Non-Contact+Probe+Pen&_sop=7

There isn't an easy or cheap way, if you want to use the original parts you will need to fit voltage dropper resistors or regulators for every electrical line from the fuse box, but that won't work with the dynamo or starter motor, you will need to replace them with 12v versions. You could avoid some of the droppers by changing the bulbs or other items like horn, cooling fan (if electric?) heater motor etc etc to 12v. Do you have a wiring diagram? You can't use one big dropper the current would be too high

it should fit.

Hello, again, again Bridget. First I sent you explanation of the ignition system and I gave you my best guess---ignition module on your 1994 Plymouth with V6 3.4 L engine.

As far as voltage regulation goes there isn't any external devise to do this. This voltage voltage regulation take place inside the alternator after the three phase AC voltage is turn into none regulated DC voltage. Now this DC voltage goes thru a voltage regulator that built into the alternator where the output DC voltage is 13.8 to 14.1 DC Volts. Now, the alternator is regulated for current by the it wire windings in the alternator. Larger the copper wire the more current the alternator will produce. GB.....stewbison

did you test the alternator? (it's a free test at most local parts stores).
Best regards,
Ck

If no damaged wiring is found, it's most likely an internal fault in the ECM (Engine control module, computer, PCM, ECU, whatever you want to call it, it goes by many names)
The Voltage Regulator is built into the ECM on virtually every Chrysler product (including Jeeps) after 1987 or so. And it is prone to failure. If it does fail, you either have to replace the ECM or install an External Chrysler Voltage Regulator, which requires some wiring harness modifications and a few parts that can be purchased at your favorite auto parts store.
To do the External conversion, you'll need :
1 Chrysler Voltage Regulator (virtually any Dodge/Plymouth from 1970 - 1986. It's best to order one for a 70's 4x4 Truck with a 318 engine though, to avoid any possible mix ups)
1 Chrysler Voltage Regulator Pigtail (this is the plug that connects to the regulator)
Roughly 10 feet of 14 gauge wire, possibly less, depending on where you want to mount the regulator.
Most, if not all Regulators now include a wiring diagram in the box, for this purpose, just follow the diagram and match up the field wires on the alternator with the ones in the diagram. On a '93 Jeep one field wire should be Blue, the other should be Green.

knowing the color codes can be a great help..usually in 12v reg system,from the regulator there are 6 white wire having a stripe codes,blue means neutral,green means field,black means ground to body,white means hot wired to +12v,yellow means to bat charging indicator going to instrument panel and finally red means to ignition....and always secure the regulators case to ground.

manual voltage regulator or electronic ,either way its simple ,one wire from battery or ignition switch runs to regulator for the sensing then one from the alternator and another to earth .if stuck i have a 40yr old lucas manual in the shed ,or just fit a all in one alternator on ,not difficult

CHECK THE STRUT MOUNTS ON THE TOP WHERE THEY MOUNT UNDERNEATH THEY COULD BE LOOSE AND MAKING NOISE, SOMETIMES THEY WEAR OUT.

I do not have a diagram. Try this. Check for 12V at one of the wires with the ignition key on; you may need to do this a few times because the voltage will only be on for about 8 seconds. Have someone turn ignition on and off. Do not crank but if you do, voltage will be there also. Then that would be the fuel pump hot wire. One will be ground. Also ground the wire one at a time, if the gauge moves, then that is the fuel gauge wire. The other would be ground or there could be a body ground generally speaking. How many wires goes to the tank?