Wiper Motor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cacauba · 01-13-2003, 09:51 PM

is there anyway to test a wiper motor prior to install? i've tried to connect all the electronics to it and then turn the key and engage the wipers but nothing happens. is there something else wrong? i've checked the fuse its ok. i replaced it just to make sure. did i just pull out my motor for nothing? please help. i sill have to get it back together before work tomarrow.

70cst10_05 · 01-13-2003, 10:00 PM

umm get some wires and attach one end to a battery just an spare car battery if ya have one layin around and connect one wire to that and just start screwin w/ it and that should tell ya

ozarkhippie · 01-13-2003, 10:04 PM

I'm not sure of this but try grounding the motor to the body. It may not have any thing to do with it, I can't remember if they ground through the wiring or not or ground from one of the mounting bolts.

cacauba · 01-13-2003, 10:05 PM

i've tried to touch a scap piece of wire to each terminal from the batterie but nothing happened. this led me to believe that it either had to be grounded or all the wires had to be connected. so i connected all the wires but didn't remount the motor, because it's a pain in the a$$ with an ac cab. but that didn't work either. any other thoughts?

70cst10_05 · 01-13-2003, 10:12 PM

it doesn't have to be grounded, cuz me and my dad did it one night, i don't remember how though, sorry.

James67 · 01-13-2003, 11:13 PM

You don't need to ground the motor. the power runs from the fuse block through the motor to the switch and when you turn the switch it goes to ground. hope this helps.

TERRYP · 01-14-2003, 05:42 AM

The switch can switch on power, or complete a ground, as it is doing in the wiper circuit. Wiper motor gets power at all times. On our series motors, there are 3 possible combinations, plus washer operation. For you techies, here are the combinations:
Park and off = lt blue and black connedted, (not grounded0
low speed = lt blue and black grounded
high speed = lt blue grounded
washer = dark blue grounded

cacauba · 01-14-2003, 10:52 AM

thanks for all ya'll help, got it working about 11:30 last night!

gman · 01-14-2003, 03:31 PM

K5er,

What was the problem?

cacauba · 01-14-2003, 03:39 PM

I used so electrical cleaner and really made sure the plugs were tight and for somereason the 3rd time i tried it, it worked. and so far it has been reliable. so i dont' know.

01-13-2003, 09:51 PM	#1
cacauba STL-KKN Join Date: Aug 2001 Location: Tomball, Tx Posts: 182	Wiper Motor is there anyway to test a wiper motor prior to install? i've tried to connect all the electronics to it and then turn the key and engage the wipers but nothing happens. is there something else wrong? i've checked the fuse its ok. i replaced it just to make sure. did i just pull out my motor for nothing? please help. i sill have to get it back together before work tomarrow. __________________ 1969 C10 350/POWERGLIDE 1991 1500 EXTCAB 350 Formally: collegeK5er

01-13-2003, 10:00 PM	#2
70cst10_05 Registered User Join Date: Dec 2002 Location: Summerfield, Ks Posts: 744	umm get some wires and attach one end to a battery just an spare car battery if ya have one layin around and connect one wire to that and just start screwin w/ it and that should tell ya __________________ 1970 Chevy CST/10 1970 Chevy CST/10 1972 Chevy C/10 1972 Chevy Suburban K/10 2019 Silverado 2500 Duramax Kevin

01-13-2003, 10:04 PM	#3
ozarkhippie Registered User Join Date: Nov 2002 Location: Eureka Springs AR Posts: 494	I'm not sure of this but try grounding the motor to the body. It may not have any thing to do with it, I can't remember if they ground through the wiring or not or ground from one of the mounting bolts. __________________ Buy Sale or Trade 71 3/4 4x4 72 1/2 ton cheyenne 4x4

01-13-2003, 10:05 PM	#4
cacauba STL-KKN Join Date: Aug 2001 Location: Tomball, Tx Posts: 182	i've tried to touch a scap piece of wire to each terminal from the batterie but nothing happened. this led me to believe that it either had to be grounded or all the wires had to be connected. so i connected all the wires but didn't remount the motor, because it's a pain in the a$$ with an ac cab. but that didn't work either. any other thoughts? __________________ 1969 C10 350/POWERGLIDE 1991 1500 EXTCAB 350 Formally: collegeK5er

01-13-2003, 10:12 PM	#5
70cst10_05 Registered User Join Date: Dec 2002 Location: Summerfield, Ks Posts: 744	it doesn't have to be grounded, cuz me and my dad did it one night, i don't remember how though, sorry. __________________ 1970 Chevy CST/10 1970 Chevy CST/10 1972 Chevy C/10 1972 Chevy Suburban K/10 2019 Silverado 2500 Duramax Kevin

01-13-2003, 11:13 PM	#6
James67 New Member Join Date: Jan 2003 Location: Powder Springs, Ga. Posts: 13	wiper motor You don't need to ground the motor. the power runs from the fuse block through the motor to the switch and when you turn the switch it goes to ground. hope this helps.

01-14-2003, 05:42 AM	#7
TERRYP GYRO GEARLOOSE Join Date: Jun 2000 Location: Nevada City, CAEverett, WA Posts: 361	The switch can switch on power, or complete a ground, as it is doing in the wiper circuit. Wiper motor gets power at all times. On our series motors, there are 3 possible combinations, plus washer operation. For you techies, here are the combinations: Park and off = lt blue and black connedted, (not grounded0 low speed = lt blue and black grounded high speed = lt blue grounded washer = dark blue grounded __________________ Nevada City, CA Everett, Washington 57 3/4 rat, 235, 3spd 66 C-10 Panel, SWB. 350 from '68, 200R4 tranny, 3.07 rear ratio, restoring 68 C10 LWB 350 4spd, 4.56 rear dump runner 82 Camaro, 305, THM-200-R4 84 Monte Carlo 305 TH350, land tuna 85 Tercel SW, snow runner DISGRACED OUTLAW MEMBER OF THE DRUM BRAKE CLUB

01-14-2003, 10:52 AM	#8
cacauba STL-KKN Join Date: Aug 2001 Location: Tomball, Tx Posts: 182	thanks for all ya'll help, got it working about 11:30 last night! __________________ 1969 C10 350/POWERGLIDE 1991 1500 EXTCAB 350 Formally: collegeK5er

01-14-2003, 03:31 PM	#9
gman Registered User Join Date: Nov 2000 Location: Ogden, Utah Posts: 290	K5er, What was the problem? __________________ 72 Chevy SWB Custom Deluxe K10, 350/SM465, PS, PB, Fact. Air 2000 Harley...Wide Glide

01-14-2003, 03:39 PM	#10
cacauba STL-KKN Join Date: Aug 2001 Location: Tomball, Tx Posts: 182	I used so electrical cleaner and really made sure the plugs were tight and for somereason the 3rd time i tried it, it worked. and so far it has been reliable. so i dont' know. __________________ 1969 C10 350/POWERGLIDE 1991 1500 EXTCAB 350 Formally: collegeK5er

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