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Light switch replacement 200 1979

posted by  Volvodad on  Sun Jan 17 06:03 CST 2010
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last visit: Thu Oct 23 16:18 CST 2014
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The 4-prong headlamp switch is for later 240's which used a relay to handle the headlight power demands. It's a good thing it won't fit the earlier harness connector as it wouldn't last long.

Our 1983 melted its plastic harness connector, too. I found a junkyard unit which had an only-moderately-overheated harness connector. I have yet to see one in perfect shape. I installed a 30-amp relay near the headlamp beam switching relay, which gets power from a 12-ga wire straight from the battery's positive post. This means the headlamp switch only handles the current required to run the parking/tail/licence/instrument lights, much like the newer 4-pin switch setup in 240's (and 700's)





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