I agree, light is IMPORTANT. I am in the midst of converting my barn to a shop and have a pair of 400W Metal Halide fixtures setting on the floor ready to be mounted. I finished the wiring for them yesterday. I hope and expect that this will give me light as if the sun wer shining right under the hood.

That's how important that I believe light to be when working on a car or anything else, especially with my almost 55 year old eye balls.

Job well done on chasing down the problem. Always remember to go back to the last thing that you did if something goes wrong at the same time.

Good luck,