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Originally Posted by lhall
I have read through most of the threads but did not find an answer. I recently purchased a '62 Ambassador and have three main questions.
1. There is a small battery box on the front which has wiring for a battery. Coming out of the side of the box is a conduit with two outlets and a wiring cable that runs the entire length of the trailer and comes into the rear compartment. This is then connected to another set of battery terminals. Has anyone seen this? I think someone tried to use the rear compartment as a battery box. I am having a difficult time figuring out where the 12v
fuses and panel would be.
The small, oblong battery box is original to your coach. It wouldn't be until 1964
that the battery would move to the rear one-stop service compartment along with the adoption of the larger series 24 or 27 battery. This particular external battery compartment takes a battery typically utilized for 1960s era farm tractors -- it is often most easily found at stores catering to agriculture and farming.
The conduit is likely a previous owner addition to facilitate relocating the battery to the rear compartment as the only battery on pre-'64 60s era coaches was the front mounted "tractor" battery. You may find that there is an additional cable in that box that was originally connected to the tow vehicle to provide charging when underway -- this was from a time when the charge circuit wasn't always a part of the regular tow vehicle connector.
If your '62 is similar to the '60 coaches that I have encountered, your 12-volt fuse panel is likely hidden behind a removable panel below the front window of your coach. When this panel (a small almost square patch of aluminum) is removed, it exposes 2-glass-type fuses similar to the ones utilized in homes prior to adoption of circuit breakers as standard.
Originally Posted by lhall
3. The previous owner installed a new carrier A/C unit to the trailer. When the compressor kicks in, I notice that the lights inside dim slightly. Is this normal? I am assuming that the A/C does not have it's own breaker since there are only two that seem to be original to the trailer. I do not know if this is proper or not. Any advice here is greatly appreciated.
The answer is that it depends, but this can be evidence of a potential problem with low voltage which will eventually damage your air conditioner and can be fatal for several components of the air conditioner. The first question regards the circuit to which the trailer is connected when this happens -- is the circuit 30-AMP? If the circuit is not 30-AMP, you are in great danger of buring out either your compressor or capictors if not both (due to insufficient voltage)
. With a 40+ year old coach, you may also find, as I did, that the breakers were worn and not performing up to standards -- with my '64 Overlander, this meant a new service box was cheaper than trying to find replacements for the old breakers. On my '64 Overlander one of the circuit breakers serves the air conditioner while the second supplies all other electrical circuits.
Good luck with your coach!