Instrument cluster
Olds 98 regency 1991. Directly
behind the speed needle is a device
with 4 holes on top of the motor.
Them there is a loose fitting cap with
the same 4 holes. However there are
only three receptival holes in it. How
do i get the 4 pins into the receptical
fitting. There are two other such pins
but they have a fourth hole in the
green circuit board to accodate that
4 th pin. So how do i fix this thing?