I just installed a new DCPower SPX 300 Amp Alternator in my truck.
Here's a question: By default, the stock 2003 F250 alternator doesn't start charging the batteries until 120 seconds after start. By bypassing that system via upgraded 0AWG + and - cables, I'm now charging the batteries immediately upon start. Everything seems to be running fine, but am I causing some type of long-term damage to the engine or electrical system? I figure there *must* be a reason it was engineered not to charge the batteries for the first 120 seconds (I know the batteries are used to run the glow plugs, but not sure how/why that relates to not charging them).
My thought process (here are two pics: http://drod.io/image/3z0I2z2h2z2S
Since this is a 300amp alternator, I upgraded both the positive and negative lines with 0AWG cables. I attached the positive cable to the positive terminal on the alternator (with a 250amp fuse inline) and attached it to the positive terminal of one of the two batteries. And then I attached a negative cable to the base of the alternator where it screws to the engine block, and attached that to the negative terminal of the battery.
So now, immediately upon start-up, I get a 14.4-ish voltage showing on my Insight CTS, because the alternator is charging the batts immediately.
Can you please let me know:
1) Is everything OK as-is?
2) Should I *not* have the negative 0AWG cable attached, and only have the positive 0AWG cable attached? (I was thinking maybe if I took off the negative cable, the system might go back to its previous state of not charging for the first 120 seconds -- i.e., if I'm not completing a full positive and negative loop, but only the positive side of things, then the default charging system would take over, but I'd still get the benefits of the upgraded positive 0AWG cable
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