Re: I need a replacement circuit board for a pacific...
You might not need a circuit board, especially if it has a kid trax or safety 1st battery in it. You can find out more at www.cammhsm.com
I know, I have a vehicle like this and had to find out the hard way.
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It could be as simple as a glove box light not shutting off or the overhead mirror light staying on. You need to find the power distribution center and find which circuit is drawing the power from the battery. This will require 12 volt meter and a 12 volt power light and someone who knows how to use then to check the circuits, Also a vehicle wiring diagram would be very helpful.
Voltage conversion necessitates the replacement of all 6 volt light bulbs and motors with 12 volt light bulbs and motors (including the starter), plus the addition of a ballast resistor to the ignition primary so that the ignition primary can continue to operate on 6 volts. You will need to refit a 12 volt starter solenoid, alternator, and regulator to the vehicle as well. Needless to point out that you will also need to replace the radio. You can use the original wiring if it is in good condition, and all switches should operate adequately as long as their insulators are still intact. The 12 volt system uses less current than the 6 volt system, so there should be no problem with wire gauge. IMPORTANT:If the original system is POSITIVE GROUND instead of NEGATIVE GROUND, you will need to verify the polarity of all motors you replace, plus reverse the polarity of the ignition coil primary.
remove your negative battery cable insert a 12 volt test light between the post and cable you should see the lamp light this is your short. pull fuses until the light goes out the circuit on that fuse is running down your battery if pulling all fuses does nothing replace your alternator; the altenator diodes are bad
There are tiny 12 volt DC bulbs that are soldered to the circuit board inside the climate control head, you must remove the module, take it apart and replace those bulbs. You can buy the bulbs at Radio Shack Part #7219
P0652 DODGE - 5 Volt Sensor Reference 2 Circuit Low These 5-volt reference circuits are independent of each other outside
the PCM, but are bussed together inside the Engine Control Module (ECM).
Therefore a circuit condition on one sensor 5-volt reference circuit
may affect the other sensor 5-volt reference circuits. The ECM monitors
the voltage on the 5-volt reference circuit.
Each of the said circuits go through a FUSE and so the first point of check is the fuse. Now sometimes it is best to check using a replacement fuse and if this blows you have another issue in hand which incidently is a short within the panel board , the lamp holders or the harness. If there are many circuits that are not working the harness can be the suspect. A trace using a voltmeter or a 12 volt dash bulb can help to trace the missing +12.
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