Make sure that your front turn signals are correct 7528 bulbs, and that the brake lights and rear turn signals are the 7506's. Often they are replaced with incorrect 1157 and 1156 bulbs.

What I think that you should do next is to remove EACH SET OF MATCHING bulbs one at a time and see if, and when, the bulb-out indicator goes out. By a set of matching bulbs, I mean for example, the left and right rear break light etc.

If after removing a specific set of matching bulbs, the bulb-out indicator goes out, you should then change BOTH of these bulbs.

If that does not work, or the problem returns, you then probably have a corroded contact in a bulb socket.

I suspect however that your problem relates to a particular set of bulbs that are not matched in the sense that one bulb in that set is drawing a different amount of current then the other bulb, therefore triggering the bulb-out indicator light.

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]