wiring problem @*#%$^@(

[oj70chevy]

First off I swapped the dummy light cluster to a new cluster with gauges with wiring. The problem I’m having right now is when the parking lights are on; both blinker lights on the cluster are on. However they do flash when the lever is moved to right or left. Second the light blue wire that is suppose to supply ground to the front side markers and front parking lights will be ground when the lights are off and have power when the light are on (and when I say it has power I mean there is ether ground or power on both leads at the same time no matter if the lights are on or not). For a temp fix I cut the light blue wire and grounded it on the side that goes to the lights and they work fine. If any one has any suggestions I would appreciated it. Sorry one more question. The engine is a 250 straight 6cyl. On the oil sending unit does any one know what sending unit (exact year and motor size) I could use in this? I checked with the local auto parts but they only show the sending units with the wire plug on it. And my gauge uses the pressure from the engine it self. Sorry if I did not explain that right.