may03LT Posted September 28, 2008 Report Share Posted September 28, 2008 Whats the difference between the 03 and 07 alt/ regulator setups? I swapped an 03 alt into an 07 and afterwards did not have power on the turn on circuit....the only difference I see between the two is that the 03 is turned on by the PCM and the 07 is turned on by the regulated voltage control module....jumping the turn on lead with B+ made the alt work as it should.....I verified that the cluster is receiving the voltage message from the RVCM:undecided any ideas? am i missing something? 03 Alt wiring diagram 07 Alt wiring diagram thx!!!! Quote Link to comment Share on other sites More sharing options...
missinglink Posted September 28, 2008 Report Share Posted September 28, 2008 Whats the difference between the 03 and 07 alt/ regulator setups? I swapped an 03 alt into an 07 and afterwards did not have power on the turn on circuit....the only difference I see between the two is that the 03 is turned on by the PCM and the 07 is turned on by the regulated voltage control module....jumping the turn on lead with B+ made the alt work as it should.....I verified that the cluster is receiving the voltage message from the RVCM:undecidedany ideas? am i missing something? The two systems are not cross-compatible. Both systems receive a modulated signal back from the regulator, but that does not mean that the signal is the same. The PCM provides a PWM signal on the regulator input, and reads the field duty cycle as well as system voltage to adjust charging with the DR44G alternator. Your older AD244 is managed in a similar fashion, but the old regulator still has the capability to run without feedback - that is why you could make it start with a jumper to B+ ( I strongly recomend a current limiting resistor in that jumper circuit!) Why are you installing an older, non-compatible alternator in your 2007? 'Link Quote missinglinkaudio The United States Marine Corps. When it absolutely, positively has to be destroyed overnight - even if "it" belongs to the base commander... Link to comment Share on other sites More sharing options...
E a r t h Posted September 28, 2008 Report Share Posted September 28, 2008 I was wondering why...aswell. Quote Link to comment Share on other sites More sharing options...
MECHMAN Posted September 29, 2008 Report Share Posted September 29, 2008 The two systems are not cross-compatible. Both systems receive a modulated signal back from the regulator, but that does not mean that the signal is the same. The PCM provides a PWM signal on the regulator input, and reads the field duty cycle as well as system voltage to adjust charging with the DR44G alternator. Your older AD244 is managed in a similar fashion, but the old regulator still has the capability to run without feedback - that is why you could make it start with a jumper to B+ ( I strongly recomend a current limiting resistor in that jumper circuit!) Why are you installing an older, non-compatible alternator in your 2007? 'Link x2 It's not going to work corectly. It's the same price for a 2-pin unit, why not just install the correct alternator? Quote 1-888-MECHMAN www.Mechman.com [email protected] Link to comment Share on other sites More sharing options...
may03LT Posted October 6, 2008 Author Report Share Posted October 6, 2008 The two systems are not cross-compatible. Both systems receive a modulated signal back from the regulator, but that does not mean that the signal is the same. The PCM provides a PWM signal on the regulator input, and reads the field duty cycle as well as system voltage to adjust charging with the DR44G alternator. Your older AD244 is managed in a similar fashion, but the old regulator still has the capability to run without feedback - that is why you could make it start with a jumper to B+ ( I strongly recomend a current limiting resistor in that jumper circuit!) Why are you installing an older, non-compatible alternator in your 2007? 'Link Thanks for the info....to answer your question I did the install for a friend. Was told it would work if the connector was changed. x2It's not going to work corectly. It's the same price for a 2-pin unit, why not just install the correct alternator? cool thanks boss Quote Link to comment Share on other sites More sharing options...
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