I have an electrical mystery (to me) and no skill at all in things electrical. I have a Westach dual instrument for oil pressure and temp. Yes I know they are not the best..... For some time the temp would drop to zero for a bit then jump back to temp. Did this for a several months. Then one day I found if I turned off and on the strobes it would read again instantly. Now it seems to stay reading. So.....
The other day I had the strobes off and when turned on I see the temp dips a tiny bit in time with the strobes. Strobes off and nav lights on - the temp drops about 20 degrees and stays there until nav lights off then full temp again.
Any ideas on what I can check or do to troubleshoot further? It's not that big a deal but isn't right and I'd sure like to correct it.
Thank you!