Electrical system question, what more can I add to the system? |
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Electrical system question, what more can I add to the system? |
Fyrmdk914 |
Dec 7 2006, 01:45 PM
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#1
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Newbie Group: Members Posts: 27 Joined: 12-November 06 From: San Diego Member No.: 7,203 |
I have a 75 1.8. I just got this car about a month ago, and added a 300 Watt amplifir and a single 8" sub-woofer to the already upgraded stereo. Then, about 2 weeks later, my alternator died. I believe that this untimely death was caused by the additional draw on a 31 yr old alternator. I have replaced the alternator with a rebuilt stock Bosch unit and a new regulator. The system seems to be charging fine now. My question is this, How much more draw wil the system handle? I would like to upgrade to the halogen Headlight system, and add seat heater elements into the seats when I have them redone, (soon I hope, but delayed now due to the alternator expense!). I don't think that the headlight upgrade will increase draw much? But I am concerned with the draw from the heaters. I also realize that whenever I use the seat heaters here in So Cal, I will probably also be using the headlights, and I would hate to be in an either/or situation. Also, this car has carbs, so I think that I am saving some current there.
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davep |
Dec 7 2006, 02:54 PM
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#2
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914 Historian Group: Benefactors Posts: 5,159 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada |
Stock alternator is 50 Amps, so 700 watts tops. No alternator likes to run at over 80% capacity for a long time, say over an hour at a time. That puts the normal max load at 560 watts. I'd say a 300 watt stereo puts you way over the design load.
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