Del wrote:
Hello again,
The engine is now running, 223 sounds good, but I have some
electrical questions; 55 Ford F-100, 6v pos ground. Right tail
light works, left tail light does not illuminate bulb (bulb
works fine). I have power to both posts (running light / turn
signals) inside the receptacle & I have a good ground to
the receptacle. I have also tried a new trailer tail light w/
a 6 volt bulb, didn't work, any ideas?
I have a two prong flasher that doesn't seem to work. How do
I test the flasher? How would I wire a three prong (only thing
Napa had in stock) flasher? Can you suggest a make/part # that
has worked best for you or other club members?
Lastly, I've read a lot lately about 12v conversion, but I'm
uncomfortable w/ the move (no experience in such a mod), is
there a reference that starts w/ Step 1 thru Step XX & can
you suggest part #s for resisters, coils, voltage drops, generators,
etc?
Thank you, Del
P.S. Do you know anyone in the Port Angeles Sequim area that
knows F-100s, clubs?
Hank
wrote:
It still sounds like a ground problem on the tail light.
What
I do is get a length of wire with two alligator clips one
on each end ( jumper wire)....Sand off a bare spot on the
tail light housing and attach one clip. Connect the other
clip to a suitable ground....sand a
bare spot on the frame or a bolt on the frame.
You
need a simple continuity checker NAPA may have one but it
is essentially a bulb attached to two wires and a probe on
each end of the wires. You then put one end of the probe on
one of the hot contacts of
the tail light and the other on the tail light housing. If
it lights you have solved the ground problem with the jumper
wire. if it doesn't light, take the end opposite the hot contact
and probe the frame or chassis until you get a good ground...the
bulb will light. try moving the jumper wire so the previous
step works.
I
have built-in permanent jumper wires on my truck as the ground
near the tail lights is sooo poor.
It has been so long since I used a six volt system, but I
think you need a two prong 6 volt flasher to get it to work....
The main problem is to get enough current to flow thru the
flasher to get it to click ( flash).
If
you look real closely at the 3 prong flasher the terminals
are labeled "X" "P" and "L".
hook up the X to the truck power, the L turn signal and the
"P" to the Pilot light ( Indicator) which is not
necessary on the truck.
12 volt conversion no sweat
Remember the truck will be 12 VOLT NEGATIVE GROUND. Hopefully
your wiring is in reasonable shape....i.e. most everything
is hooked up and it has not been trashed by a hacker.
Step
1
disconnect and throw away the battery.
Step
2
replace all six volt bulbs with equivalent 12v bulbs. (Note:
tail lights are 1157 or equalivant)
Step 3
throw out the six volt generator and regulator. replace
with a 56-64 ford 12v generator and regulator
Step
4
buy a large voltage dropping resistor for the heater fan and
wiper motor. If you get a big enough one you can run both
the heater motor and the wiper motor on it. NAPA should have
these...they are available thru Hemmings Motor news or any
F-100 parts supplier also.
Step
5
Hook the input end of the resistor to the hot lead and one
output wire to the heater switch and the other output wire
to the wiper switch.
Step
6
Remove the instrument panel input power and run it thru the
dropping resistor and re-hook it to the panel. You need a
wiring diagram to find this wire.
Step
7
Throw, or better yet, sell at swap meet, (for big bucks )the
stock radio (if you have one).
Step
8
REMEMBER REMEMBER REMEMBER REMEMBER REMEMBER REMEMBER
REMEMBER 12 VOLT NEGATIVE GROUND
hook
up the battery.... REMEMBER REMEMBER REMEMBER REMEMBER
REMEMBER 12 VOLT NEGATIVE GROUND
step
9
Give
it the smoke test...try and start it...the starter motor should
turn over really fast and it should start quickly. Caution:
Do not use the starter motor for long periods of time as you
will eventually smoke
it if you do. Putting 12 volts to the 6 volt starter will
not hurt it if it is in good shape and you follow the caution
above. If you smoke the starter just replace it with a 56
to 65 12 volt starter.
I have run just this conversion on a 55 for about 30 years...without
any problem
NOTE: The instrument panel, the starter motor, the heater
motor, and the wiper motor do not care if the ground is positive
or negative....the radio does.
If
you have any trouble give me a shout...
Del
wrote:
Greg
(aka Hank), you were right on the money! I never thought to
do a continuity check from the receptacle to bracket, results
no continuity. An hour of grinding & sanding fixed the
problem & I have lights.
I still don't understand why I got the same voltage reading
from both lights when the left one was never grounded. I'm
getting closer to getting it on the road. Thanks again, Del
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