So searching for the reason my 86 f150 is losing battery charge i pulled off the connection to the ECM and found corrosion on the tips of the male end of the connectors. I have since taken an old toothbrush in there and cleaned them off. Would this cause a slow drain on a battery?

During my search for a short I found that it was not related to any fuses being pulled but noticed some power being taken from a brown to yellow fusible link that went from the starter relay at the same place the positive cable connects to god knows where. I looked at a wiring diagram on autozone's website and it showed no such wire. Any insight would be greatly appreciated. Thanks!

 

No it would not. I take you are talking about the 60 pin computer plug.
I do not show a brown wire or fuse link in my diagrams at the starter solenoid.

 

It is the 60 pin computer plug, thats good to know. And yeah, I'm dumbfounded by the wire, I'll try to take a picture of it tomorrow and post.

 

Here is what I have on the 1986 Starter Solenoid wiring:


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