i have an 89 ford 150 wen i turn the key i have no power what could that be
Bad battery, battery cables, blown fuse links, ignition switch just to name a few.
I replaced all of that and still no lights
So you are going to have to do an individual circuit test to find the broken circuit, I think you might have missed a fuse link.
Looking for a Used F-150 in your area?
CarGurus has 208,274 nationwide F-150 listings starting at $1,200.
Search Ford F-150 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Ford F-150 Experts