Brake lights wont work? on 1990 Ford F-250

The truck is a 1969 F250, I changed the Brake Switch, Im getting power to Brake Switch, and tail lights. Could it be a bad flasher switch thats under the dash? I didnt replace it yet. Also the bulbs are good, I think?

by in Carlsbad, CA on May 17, 2010
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1 answer 2 comments
ANSWER by , May 18, 2010
try your bulbs first. there are 2 elements in the bulbs . if you have power back there then you either have bad bulbs or a ground issue. Roy
COMMENT by , May 19, 2010
Thanks for the info, Do you know where the ground might be?
COMMENT by , May 19, 2010
follow the black wires from the socket. they will be body mounted close by. Roy