Gene&Ginny wrote:
RoyB wrote:
... I also squirt wd40 into the connector at times and wiggle the 7-way plug around some to clear away some of the debris...
Roy Ken
I can vouch for the WD40, it does wonders on marginal connectors. It is easy, quick, and inexpensive and far better than that grease stuff.
There is only one deoxidizing spray solution to use and that is Caig brand Deoxit. Dielectric grease eliminates oxidation. WD40 is for lawn mower spark plugs that get wet and not much else. WD40 is primarily coconut/palm oil and solvent. It will dissolve certain rubber products. The reason so many use it is because it was one of the first lubricant products in a spray can. I can't say enough bad things about it.
About the fusing question. In my Superduty there is a separate fuse for parking/marker lights. It is in the main fuse panel below dash. I have blown it a number of times while using my utility trailer. That has probably more to do with the lighting system on that trailer than anything. Still, a first diagnostics step is to see if there is power at the truck's trailer harness when the truck's lights are on. I linked to the different connection schematics, pin locations, and color schedules in my first post.
You do have a test light or meter available?
