wrote:
1) Establish that you have voltage at the battery. As other
accessories
powered by the same battery are reported to be working, that is a
safe
assumption in your case.

2) Test for voltage where the wires terminate at the stereo. If you
have sufficient voltage and a complete circuit to that point, the
problem is then either an internal problem in the radio or (possibly)
lack of proper grounding. Do this test even if you are using two
short
pieces of wire to connect directly to the battery for a test. Don't
just assume you're getting power because a
3 ft wire is connected directly to the battery- there could me an
internal problem with the wire. If you're using cheap, solid
"automotive wire" vs. proper, stranded "marine cable" the chance of
an
internal problem goes up a lot- particularly with an older wire.

3) If you have power at the battery but no or insufficient voltage
where the wires terminate at the radio, you have a dirty, loose, or
improper connection between the radio and the battery. If this is the
case, start at the battery once again and trace the wires to any buss
bars, circuit breakers, etc that may be between the battery and the
radio. Test for voltage. When you find a connection without power or
proper voltage, look carefully at that connection, and look again at
the connection immediately preceding it in the circuit.


Thanks for your detailed instructions... this is a very old boat, and I
was wondering what you think is the best way to ground this radio.
Should I just connect ground to any metal part of the boat or is there
anything in particular I should be looking for?

Thanks

Should I just connect ground to any metal part of the boat or is there
anything in particular I should be looking for?

****************

A ferrous metal part of the boat that ultimately contacts the water.

Does your boat have a grounding strip or buss? Did you pull out an
existing radio? If so, reuse the same groung location. If all else
fails, the engine contacts the water through
the shaft, etc.

wrote:
Should I just connect ground to any metal part of the boat or is
there
anything in particular I should be looking for?

****************

A ferrous metal part of the boat that ultimately contacts the water.

Does your boat have a grounding strip or buss? Did you pull out an
existing radio? If so, reuse the same groung location. If all else
fails, the engine contacts the water through
the shaft, etc.

I don't know if it does. What does a particular grounding strip or
buss look like? I didn't pull out an existing radio, I actually
created a (rather big) glove compartment in which I have mounted the
radio.

"T39" wrote in message
oups.com...

wrote:
Should I just connect ground to any metal part of the boat or is
there
anything in particular I should be looking for?

Does your boat have a grounding strip or buss? Did you pull out an
existing radio? If so, reuse the same groung location. If all else
fails, the engine contacts the water through
the shaft, etc.

I don't know if it does. What does a particular grounding strip or
buss look like? I didn't pull out an existing radio, I actually
created a (rather big) glove compartment in which I have mounted the
radio.

Run it from the negative side of the battery, then connect it to the black
ground wire of the radio and also to the metal chassis of the radio. Maybe
the radio chassis has to be grounded as well?

Jack