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1988 GMC Suburban I need to know the switchleg color codes for the wiper switch(grey,orange,purple)as to matching them with the high, low , and pulse settings (which color will control what function). I already know that white is my +12V, and pink is the switchleg control for my washer motor. I am going to put a remote toggle switch to replace the switch at the end of the turn signal. Also, where is the harness connections located under the steering column?
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Hello. Your Chevy's fuel pump assembly color code wiring should be grey (power) black (ground) purple (fuel level) and orange (low fuel warning). To check, attain a 12 volt test light and probe the wires one by one as an assistant turns the switch on and off without engaging the starter. Good luck and keep me informed; if you want to.
Yukon what ? just a plain yukon ? 2WD or 4WD XL - Denali etc...
No pulse board . controlled by the BCM - body control module . Taking the vehicle to a qualified repair would be your best bet .
Windshield Wipers
The windshield wiper/washer switch signal circuits are inputs to the body control module (BCM) and the BCM controls wiper motor low speed operation, washer pump and high speed operation. The windshield wiper/washer switch is provided a low reference from the BCM and each of the switch signal circuits is supplied 12 volts through a resistor and monitored within the BCM. During LOW or INTERMITTENT operation the wiper switch low signal circuit is closed to the low reference circuit through a series of resistors within the switch assembly and the signal circuit voltage monitored by the BCM will depend on the switch contact location to the resistor assembly. During HIGH or WASH operation the high and wash switch signal circuits are closed directly to the low reference circuit within the switch assembly and nearly all the signal circuit voltage will be dropped across the BCM resistors. The BCM controls the wiper motor through the Wiper Relay and the Wiper High Relay. During any wiper motor function that uses low speed the BCM supplies the voltage to energize the Wiper Relay and battery voltage will be supplied from the Wiper Relay through the de-energized Wiper High Relay to the wiper motor low speed control circuit. During high speed wiper motor operation the Wiper Relay is energized as in low speed and the BCM provides a ground to energize the Wiper High Relay and the battery voltage is supplied to the wiper motor high speed control circuit. Wiper motor park operation is controlled by the BCM using an input from the park switch within the wiper motor assembly. The BCM supplies the park switch signal circuit 12 volts through a resistor then monitors the circuit. Whenever the wiper motor is out of the park position the park switch signal circuit is closed to ground and nearly all the signal circuit voltage will be dropped across the BCM resistor. When the wiper switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the BCM will continue to operate the motor until the wipers reach the park position. If the ignition is turned OFF while the wipers are in mid-cycle, the wipers will stop immediately where they are and the BCM will park the wipers the next time the ignition is cycled ON.
You need to remove the trim panel inside the back door, Unplug the motor, Be sure you have power on the Orange wire with key on, then test the Grey wire with wiper on, key on and if power? then likely bad motor If NO power on one or both wires at the plug? then fuse for rear wiper or bad switch the orange wire is from the RR WPR fuse in the under hood fuse box.
I doubt the other fuse is bad as if it was, the rear washer would not work So,, be sure power on orange wire, then check power on grey wire with wiper on and key on. No power on grey? bad switch. No power on both orange and grey? likely motor. This is the only way to test the system
you can buy,well we can,adaptor plugs to connect to the h/unit and to the wiring loom plug.normally its yellow=constant power 12v +,red=ignition feed 12v+,[some are other way round]black=earth,blue=power antennae,grey/greyblack,RF speaker,white/whiteblack,LH speaker,Purple/purple black,RR speaker andgreen/green black LR,,orange =illumination dash lights.Those are our standard colour codings,we get in New Zealand.
i know what you are talking about, last time i looked at the wires on the pigtail i cut off and i determined which color went to each pin location. then transfered my findings to the new pigtail.
It will be at your high side line close to the fire wall going to the evaporator,it will be at the conection,unscrew it and look down in the tube you will need a tool to remove it
The wires should be grey, orange and black, purple, and a black wire. The purple goes to purple, grey to gray. The orange and black goes to the small black wire on your car harness and the black goes to the bigger black.
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