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#94964 03/07/2006 6:24 PM | Joined: Oct 2005 Posts: 34 Junior Member | | Junior Member Joined: Oct 2005 Posts: 34 | When I rewired my '49 1 ton, I removed what looked like an accessory voltage reducer from the post on the ammeter that was lowest; closest to the ground. It was poorly wired so I didn't put it back. This truck was changed to 12v in the 1960's. I replaced the 12v gen with an Alt.
Everything works fine, but is this voltage reducer a necessary application for the original 6v ammeter? (or was it a fix done by someone in the past for some other problem?)
And, would it also be suggested to install an in line voltage reducer for the original gas gauge?
thanks
Frank
1949 Chevy 3800
1929 Chevy International
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#94965 03/07/2006 6:57 PM | Joined: Jul 2005 Posts: 1,158 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 1,158 | Amps are amps. The ammeter doesn't care about volts. I'm not sure why there would be a voltage reducer off of the ammeter unless it was the line that went to the fuel gauge.
The fuel gauge should have one, and if it doesn't you may have fried it. | | |
#94966 03/07/2006 7:02 PM | Joined: Oct 2005 Posts: 34 Junior Member | | Junior Member Joined: Oct 2005 Posts: 34 | Luckily the fuel gage is the only thing I haven't hooked up yet.
Frank
1949 Chevy 3800
1929 Chevy International
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#94967 03/07/2006 9:51 PM | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | I had a 55 1st panel that I converted to 12v. All the gauges ran at 12 volts without a voltage reducer. I put over 100K on the truck after the conversion and never had a problem with the gauges.
Save a life, adopt a senior shelter pet.
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#94968 03/08/2006 5:11 AM | Joined: Feb 2005 Posts: 355 Member | | Member Joined: Feb 2005 Posts: 355 | Yep, you'll need it on the fuel gauge. I fried one and was lucky to find another in the bone yard! | | |
#94969 03/09/2006 12:14 AM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Don,t use just any resister on the fuel gauge. It takes a special one. It draws a very small amount of current. The wrong resister would be as bad as hooking it up direct.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#94970 03/09/2006 12:52 AM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I just tested this arrangement on the bench after I figured out the correct dropping resistor for the radio. The gas gauge draws around 200 Ma or .2 A and so a resistor of 30 to 35 ohms will do the trick very nicely. The rating should be greater than 1 watt, so a 2 watt one would do.
As far as your mentioning that something was attached to the ammeter, certain accessories were fed from the ammeter terminal using an inline fuse. No add-ons should ever be fed from there without a fuse. | | |
#94971 03/29/2006 5:04 PM | Joined: Jan 2000 Posts: 124 Shop Shark | | Shop Shark Joined: Jan 2000 Posts: 124 | A Runtz from Fifth Avenue will fix your fuel gauge. Most of us with the exception of Tiny would have the misfortune of frying the gas gauge within 100 miles if we failed to install a reducer. Clint Eastwood had better stay away from Tint. Not only does he feel lucky...he is lucky and Clint may be in for a surprise!! | | |
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