Does anyone have a test procedure to see if a block heater is in working order? OK, I know I'll get posts that say to just plug it in, but here's the deal. I recently bought an 85 300d and the plug is cut off the cord coming out of the block heater. I have learned through the years that sometimes people do things for a perfectly good reason (like the shorted tach that I replaced in my first car, causing the ignition to short out and the car not to run for three weeks till my mom pointed out that the car quit running the same time I replaced the tach). Anyway, I'd like to test it before I replace the cord and try using it.
thanks,
ben