Thank you Vernon, I appreciate your honest comments and better solution. I run conventional off a transformer so I don't have to worry about compromising any DCS signal. I thought it was a starting point to try to come up with something that would work and not have to crawl around and check every TVS, I honestly didn't think the resistor and LED could handle the power but hadn't thought of using a regular 18V light bulb and fuse circuit. Thanks!
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