I have a 1983 300 SD and I was looking in the trunk where the tire compartment is located. I found a three prong electrical wire and a yellow vaccum wire loose. The other side of the yellow vaccum wire goes to the fuel door locking mechanism. Now i'm wondering if the three prong electrical wire goes to the Vaccum pump in the trunk (if there is one). Could you tell me where the yellow vaccum line connects to.
And Could you also tell me where the vaccum pump in the trunk is located (if there is one).