I have a 1995 ford ranger and the door ajar light stays on and the buzzers
dings constantly unless I remove the fuse, but if I take the fuse out I
have no speedometer or windsheild wipers. Some one told me to spray inside
the contacts in the door under the hinge with WD40 but that doesn't work.
is a small hole you can spray into with a long nozzle. I had the same
problem on my 95 Ranger. It's also better to use an electrical contact
cleaner, WD-40 can attract/hold dirt. So far mine has continued working
for 2 years although I hear some people have to replace the switch to
fix the problem.
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