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. I have to correct myself as previously I said the fog lights don't work other than as turn signals which is wrong of course, the fog lights don't work at all. I just bought an assortment of fuses and replaced the body fuse even though the old one tested as good so yes, I'm going to hunt out all fuse blocks, test them and if the BCM is defective I hope it's not too difficult to replace and I can find a used one that's not too expensive. Thanks for clarifying the role of the BCM, Ronnie.

An OTC 2000. can read the same things the built in diagnostics can

I see, so the BCM is the master, thanks for telling me that, I just wish I knew the location of all the suspects. I've always suspected one or more blown fuses were the cause. I just have to get to the parts store, get an assortment of fuses and a simple tester of continuity to check them. I'm assuming the body fuse is the main one but will do as you suggest and test all other than the circuits I know are working. I'll let you know what I find out. Thanks