i bouight a 95 cummins 2500 last month and overdrive was out along w/ the guages and alternator charging.i thought when i replaced the c.p.s it woul fix all those problems but it only fixed the o/d and speedometer.so here are my questions , what else could the charging problem be(i checked all fuses) and is the tachometer cable driven?please help me out its really appreciated.mike

 

Mike - how many volts are you getting at the battery terminals after the truck is warm and the heater grids have quit??

You may be able to wire in an external voltage regulator if needed.

 

im not sure ill check tommorow for voltage.what should it be at?is it possible that the gap for the cps is effecting anything?

 

check the connector for ur pcm. i was havin the same problems n i loosened up the connector for the pcm n pulled it out a little bit n now everything works

 

Everything in the cluster is electronic, no cables

 

i believe the regulator is inside the pcm, and if the regulator isnt working, the alternator wont charge. if my regulator is unplugged, even if the alternator is turning and hooked up to the battery, it wont charge. the external regulator isnt too terribly hard to wire

 

i wired an external regulator having because i was haveing the same problems as you and the external reg fixed it it charges fine now but im still fighting with my od its not working at all!!!

 

cool thanks guys for all your help and info.i adjusted the gap,and at first it worked perfect .now it only charges sometimes.but im certain if i play w/ it a little it'll work.lonce more thanks all you guys for your help.

 

Do they make the aftermarket regulator for my 2009 dodge diesel alternator?

 

dordboy howd u wire an external regulator i got an external regulator off of a 85 dodge ram d-350 and know all i have to do is wire it up correctly, i thought i had it wired up correctly the first time but apparently i didnt cause it still wont charge can ya help me out