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| New alternator and ammeter question https://slantsix.org/forum/viewtopic.php?t=64231 |
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| Author: | Hilderbrand1983 [ Tue Nov 19, 2019 6:00 am ] |
| Post subject: | New alternator and ammeter question |
Sweet mercy it's been a while since I've been on here! Lots of personal stuff kept me from getting going on my 67 Dart 270, but that's all been cleared up and I'm getting back to work! My 225cid engine is rebuilt and I'm purt-near ready to drop the engine and transmission into the car! I'm upgrading the alternator to a 90amp Denso unit. Here's what I know I need to do in order to make this a safe upgrade: - Shave the mount to accept the new alternator and line up the pulleys. - Run two 10ga wires from alternator positive to battery positive terminal with two 50amp fuses in each one near the terminal ends. Now, my question: I see references to bypassing the ammeter or switching to a voltmeter. The easy and less-possibility-for-screwing-up solution, to my mind, is switching to a voltmeter. Do I still need to beef up the wiring through the firewall? If I need to be more clear, please let me know how. Thanks, ahead of time, for your help! |
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| Author: | MadScientistMatt [ Tue Nov 19, 2019 6:56 am ] |
| Post subject: | Re: New alternator and ammeter question |
This wiring method will prevent the ammeter from working correctly, so you pretty much have to run a volt meter if you want to keep an eye on your charging system. The firewall wiring connection does not need to be beefed up since you are not running full alternator current through it. |
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| Author: | Hilderbrand1983 [ Tue Nov 19, 2019 7:50 am ] |
| Post subject: | Re: New alternator and ammeter question |
Quote: This wiring method will prevent the ammeter from working correctly, so you pretty much have to run a volt meter if you want to keep an eye on your charging system. The firewall wiring connection does not need to be beefed up since you are not running full alternator current through it.
So, if I understand you correctly - once I switch to a voltmeter, I do not need to alter the wires that run through the firewall? I hook it all up as before?
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| Author: | Joshie225 [ Tue Nov 19, 2019 10:28 am ] |
| Post subject: | Re: New alternator and ammeter question |
The power from the alternator needs a low resistance path to the battery. This is NOT the factory wiring which passes through the bulkhead connector twice to reach the battery. |
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| Author: | Hilderbrand1983 [ Wed Nov 20, 2019 7:26 am ] |
| Post subject: | Re: New alternator and ammeter question |
Quote: The power from the alternator needs a low resistance path to the battery. This is NOT the factory wiring which passes through the bulkhead connector twice to reach the battery.
Correct, thank you. However, the factory wiring that runs through the bulkhead connector is my question. Does it remain disconnected from the alternator, does it get hooked up as normal and run through the new voltmeter, or do I need to install beefed-up wiring to run through the voltmeter?
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| Author: | Joshie225 [ Wed Nov 20, 2019 9:19 am ] |
| Post subject: | Re: New alternator and ammeter question |
Quote: Quote: The power from the alternator needs a low resistance path to the battery. This is NOT the factory wiring which passes through the bulkhead connector twice to reach the battery.
Correct, thank you. However, the factory wiring that runs through the bulkhead connector is my question. Does it remain disconnected from the alternator, does it get hooked up as normal and run through the new voltmeter, or do I need to install beefed-up wiring to run through the voltmeter? |
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