Topic: 79 Wiper Motor Bench Test
in Forum: C3 Electrical
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Former Member
Send PM
Baker, LA - USA
Joined: 12/12/2011
Posts: 9
Vette(s): 1979 Corvette, ZZ4 with serpentine belt front dress, ATI THM 350 with 3500 stall, Vette Brakes and Products suspension, tires - 295/50 rear 255/60 front on factory aluminum alloys, Autometer guages
Anyone know the proper wiring for a bench test of my 79 wiper motor?
SPONSOR AD:: (Our Sponsors help support C3VR)
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
I can send ya the '79 wiring diagram if ya need it. I'd have to look at it to be sure myself....
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Former Member
Send PM
Baker, LA - USA
Joined: 12/12/2011
Posts: 9
Vette(s): 1979 Corvette, ZZ4 with serpentine belt front dress, ATI THM 350 with 3500 stall, Vette Brakes and Products suspension, tires - 295/50 rear 255/60 front on factory aluminum alloys, Autometer guages
Thank you.
I do have the wiring diagram, however I am trying to sort out various things after a hard life as a race car. I have some really odd combinations of options IE. factory security system without power locks etc. The harness is not all cut up and such, but isolating the wiper problem down to switch, wiring or motor has been an exercise in frustration. I finally replaced the motor with a new unit figuring it was at the end of its service life anyway. I do not need the delayed pulse system to operate on intermittant. Only Low, High and Park.
Any thoughts?
thanks
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Is yours a round motor, or square motor? I can also send you the testing info as a PDF file. Also, does the car HAVE intermittent wipers? If so, there is a control "module" for them that can keep the wipers from working at all.
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Former Member
Send PM
Baker, LA - USA
Joined: 12/12/2011
Posts: 9
Vette(s): 1979 Corvette, ZZ4 with serpentine belt front dress, ATI THM 350 with 3500 stall, Vette Brakes and Products suspension, tires - 295/50 rear 255/60 front on factory aluminum alloys, Autometer guages
This was very helpful. I have my wiring straightened out and the pulse delay bypassed. However (though not electrical) Is there information on replacing the bracket or the studs only that hold the wiper motor. It appears that the bracket holding the studs is bonded to the fiberglass cowl. It may just be sealant or something, but I do not want to hurt the body or bracket tearing it off. Can just the studs(screws) just be removed or does the whole bracket come out as a unit. If it comes out easily I will remove the rusted/unserviceable studs and replace them with stainless if possible to better resist the Louisiana weather.
thanks
in Forum: C3 Electrical
SPONSOR AD: (Our Sponsors help support C3VR)