Jerrys1990
OBS Enthusiast
Nice schematic. Thanks. Well shoot.....guess I need a good '90 control unit. I'll keep a lookout at the yard.....evilbay's prices are stupid.The manual I've got for '88 shows the actuators running on 8V. The later trucks ('92+) ran on 5V, IIRC:
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So I don't think changing your actuators will make a difference, as the head unit will be checking the reference voltage signal.