Quote:
Originally Posted by factorystock
Check out http://67-72chevytrucks.com/vboard/s...y+photo&page=8 post #185 , EW on cowl. It appears at some point in assembly, extra cost options were written on cab firewall to communicate with the line workers. This larger truck also has "2 sp" for 2 speed rear axle, and "air" for air brakes. My first guess at "EW" would be emergency switch or 4 way flasher switch equipment?
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Just going to through my guess in the ring. Electric Wipers, 2 speed. On GMCs this was an upgrade that included, windshield washers , which also included drilling the firewall for the hoses and adding the squirt nozzles. For the Hazard Flasher , nothing needed to be drilled or modified , just hang from the dash like the accessory flasher or put in the existing hole in the dash. Just a thought. Great thread by the way !!