help, dwell Options

[bd1308]

i plug in my dwell meter...
(-) goes to ground
(+) goes to neg side of coil

start car and look at meter

numbers constantly changing....try to hold probe to give steady connection....nothing.

i use the hold button to sample some numbers

112
42
23
and 1 (overflow)

changed out the condensor, and points looked okay when i put them in (new)

what gives?

point gap .013