Rally dash oil pressure gauge issue.
The gage went to the top because resistance was practically zero.
If you left it that way long enough, then the heat wire would burn up and it want move at all. Since it moved its not dead - yet.
Here's how it works.
When we simulate a sender with 10 to 11 ohms of resistance, the gage's needle will move to the top mark.
On the graph follow the yellow line from the 10 ohms on the left across to the vertical line above the top mark.
To simulate the sender resistsance for the mid point on the gage, use 22 to 23 ohms.
may be what?
The gage went to the top because resistance was practically zero.
If you left it that way long enough, then the heat wire would burn up and it want move at all. Since it moved its not dead - yet.
Here's how it works.
When we simulate a sender with 10 to 11 ohms of resistance, the gage's needle will move to the top mark.
On the graph follow the yellow line from the 10 ohms on the left across to the vertical line above the top mark.
To simulate the sender resistsance for the mid point on the gage, use 22 to 23 ohms.
