I disconnected the DF lead in both ends (reconnected in the picture below). Today I had planed on taking the motor for a spin - as I'm still waiting for my headsail. When I switched on the engine I noticed the yellow light was on (according to the manual that is the oil pressure warning light). I had a look at the wiring. See the below images
![Smile :)](./images/smilies/icon_e_smile.gif)
Wire 1 goes to the yellow light and the brown wire (number 2) goes to the dynastarter (marked D+). If I reconnect the DF lead the yellow light turns off.
Would the yellow light in my boat in fact warn me if something was wrong with the oil pressure? On the relay it says ("D+/61"). What does "61" refer to?
I had a look at an exploded view of the MD6a (see below). Looks like there is a pressure sensor next to the oil filter. Is that what monitors the oil pressure?
Looking at my engine there is a green wire going from this sensor (pressure sensor) to one of the red lights. Wouldn't that indicate that on my boat the oil pressure light is red and not yellow as described in the manual?
![Image](https://lh4.googleusercontent.com/-ApJNw89WZTo/U5Md7cjm8CI/AAAAAAAAHX8/3ZsM43yJg6A/w816-h612-no/Sk%25C3%25A6rmbillede+2014-06-07+kl.+16.12.27.png)