Hi guys, gals. I have a 2005 dodge sprinter (t1n) 2500. I have converted it into a campervan. I have installed a renogy dcdc charger (40 amps). After 3 months of that, it killed my alternator. It was a 150A alternator. I have upgraded to a 200A alternator on the replacement process. Now, when i turn on the dc charger , i notice my engine acts like a generator? Think of a fat kid hyperventilating for example of what im referring to. And at night when my headlamps are on, they sorta dim and then brighten at a slow and very minimal rate. Its only noticeable if you pay attention very well. What could cause this? Did i wire my charger wrong? Or is there some other electrical problem going on here? All advice and help is appreciated. Thanks y’all
Hi! Thanks for the response. My batter is almost a year old. Will be a year in January. It is an Interstate MTP-49/H8 100ah. I ran the positive/ negative cables (2AWG 10ft +/-) from starter battery to dc charger. Positive has a 150a anl fuse. Havnt placed a proper breaker yet… from charger to “house” batteries, i have 4awg cables That are a hit longer, maybe 12 feet? To reach. Also have 60A anl fuse between. Is my gauge to small you think? Ive read that other t1n owners install dc chargers and so far its just been a plug and play… The difference i see between them and I, my D+ is tapped into a fuse and thats where i have my switch to turn “on/off” the charger. Instead of connecting to the actual D+ terminal under driver seat… Could that be a negative factor you think?