The diodes Don picked will work fine. You can confirm this fix will work by cutting the blinker wire at the digitail parking lamp. You should see that one of the dash indicator bulbs is no longer lit when you turn on the parking lamps and if that is the case then place the diode between the wire you just cut with the cathode (end of the diode with the stripe) connected to the side of the wire attached to the parking lamp. If both are still lit then the problem is somewhere else so try that first and let us know how it goes.