New Boondocker converter test
So I connect it to a pair of 6 volts and measure immediately a whole bunch of amps heading toward my batteries. 64 or so. Is a 60 amp unit. I panicked cause I didn't want to overcharge but my god did...
Forum Discussion
You have what looks to be a Bosch 90/120 alternator.
The regulator is indeed in the ECU. The issue of prime importance is that the ECU "Interprets" field (rotor) amperage and compares it to system voltage. Sounds complicated but it isn't.
You can use any alternator as long as rotor winding RESISTANCE in ohms matches your original alternator. Meaning rotor amperage as seen by the ECU.
This alternator uses a rectified WYE stator. Eight rectifiers (diodes). The original diodes can be replaced with 70 ampere diodes (Transpo). This will afford a comfortable safety margin.
Call this number and ask for "Tech Support"
ROMAINE ELECTRIC 8811 S 208th St, Kent, WA 98031, United States
(425) 264-1700
Have the ORIGINAL EQUIPMENT NUMBER on hand. This is the Bosch part number. See if they can cross it to an exact fit replacement NIPPONDENSO alternator with a BETTER AMPERAGE OUTPUT CURVE. Romaine is SHARP. You might want to mention retaining original rotor ohm resistance.
If you run into a snag with a Nippondenso replacement, ask ROMAINE TECH if their stator supplier LUND % FLYNN, offers an upgraded STATOR for your Bosch. That and 70 ampere or even 50 ampere rectifiers will make all the difference in the world when using the vehicle engine to recharge batteries. I have done these upgrades often enough to know for a fact they are entirely compatible with the MoPar ECU of your vintage. The upgraded alternator will also last longer. Might as well get bearings and brushes while you're at it.
The regulator is indeed in the ECU. The issue of prime importance is that the ECU "Interprets" field (rotor) amperage and compares it to system voltage. Sounds complicated but it isn't.
You can use any alternator as long as rotor winding RESISTANCE in ohms matches your original alternator. Meaning rotor amperage as seen by the ECU.
This alternator uses a rectified WYE stator. Eight rectifiers (diodes). The original diodes can be replaced with 70 ampere diodes (Transpo). This will afford a comfortable safety margin.
Call this number and ask for "Tech Support"
ROMAINE ELECTRIC 8811 S 208th St, Kent, WA 98031, United States
(425) 264-1700
Have the ORIGINAL EQUIPMENT NUMBER on hand. This is the Bosch part number. See if they can cross it to an exact fit replacement NIPPONDENSO alternator with a BETTER AMPERAGE OUTPUT CURVE. Romaine is SHARP. You might want to mention retaining original rotor ohm resistance.
If you run into a snag with a Nippondenso replacement, ask ROMAINE TECH if their stator supplier LUND % FLYNN, offers an upgraded STATOR for your Bosch. That and 70 ampere or even 50 ampere rectifiers will make all the difference in the world when using the vehicle engine to recharge batteries. I have done these upgrades often enough to know for a fact they are entirely compatible with the MoPar ECU of your vintage. The upgraded alternator will also last longer. Might as well get bearings and brushes while you're at it.
