Yes, a 100W bulb can cause trouble if improperly located too close to something that can't handle the heat. Finding 100W bulbs is getting to be a problem. But if you put a high
wattage bulb into a trouble light enclosure, you have lessened your risk. Ideally, locate the trouble light by the hook and have the shield not in close contact with anything. Free air flow all around. This sort of thing combined with a blanket over the hood kept my car starting all through some Great Lake winters.
Chuck Peck in CasaLoca (currently parked in Florida)
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