I accidently broke the Mars Light bulb on my MTH F-3 Powered A Unit (20-2151-LP) from 1997 and can’t find the part number for the bulb? I went to the MTH website and looked up my particular engine and unfortunately there was no parts diagram to look at. I see there are a number of MTH replacement bulbs readily available from a variety of sources; I just don’t know which is the correct part number for my engine, can anyone help me? Warren.
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