'67 wiper motor

[Ray Dattilo]

How can I tell if it's the wiper motor or something else in the circuit that's causing my wipers not to work? When I turn the switch I hear a click at the motor but nothing happens. I recently got the car and I think it's been this way for some time. I'll send the motor out for rebuild if that's what it needs but I don't know. I have a circuit tester but don't know exactly what to test. I hate electrical stuff. Any advice? Thanks in advance.

Ray

[Wayne W.]

Re: '67 wiper motor

The first thing you should do is to ground the motor case with a wire to a good ground. It just may go to working.

[Ray Dattilo]

Re: '67 wiper motor

Thanks Wayne, you hit the nail on the head! Perhaps it was a basic question but I know so little about electrical matters. Which of the wires that are there is supposed to be the ground wire? (I'll make a better connection if that's what's needed) Thanks again.

Regards,
Ray

[Wayne W.]

Re: '67 wiper motor

The ground wire (black) should have a lug on it attached to a washer cover bolt I think. It continues on to the heater motor ground, so look there and trace back.

[Ray Dattilo]

Re: '67 wiper motor

Wayne,
Since you mentioned the heater motor, I suppose it's no coincidence then that the heater fan also is not running. Is it too simple for me to presume that that's a ground problem too? Thanks again,

Ray

[Wayne W.]

Re: '67 wiper motor

HO NO, they wouldn`t be in the least related.

[Ray Dattilo]

Re: '67 wiper motor

Wayne,
Thanks for the info. I'll leave the heater fan alone for now; a little knowledge can be a dangerous thing for me.
Best regards,
Ray

[Gary S.]

Re: '67 wiper motor

If you want to see, quickly and simply, if it is the ground, just run a spare wire from any metal engine surface and put in under one of the wiper cover screws. I had a non-functional wiper on my 66 and this cured it. I cleaned up the installation of the ground wire but I never did move it. Just call me Bubba.
Gary

[Mike McKown]

Re: '67 wiper motor

Wouldn't you think the same thing would work with Ray's heater blower? I think he might haven't gotten derailed.

Mike

[Wayne W.]

Re: '67 wiper motor

YES, They are certainly related. It is the same ground wire. Fix one and you fix both if you use the original harness.

[Mike McKown]

Re: '67 wiper motor

I thought that's what you meant. Not sure Ray did.

Mike

[Ray Dattilo]

Re: '67 wiper motor

Wayne,
I caught the dialogue between you and Mike. You're right, I did misunderstand what you said and I'm glad to hear that I may be able to correct the problem with both my wiper and fan. I am embarrassed that I am such an electrical putz but I can't seem to find the ground wire responsible for these two apparently related items. The AIM schematic shows only a brown and blue wire coming from the wiper motor and that's what I've got. Where's the black? The same schematic also shows a black wire coming from the heater blower and ending in what I presume is a ground. I don't see the connection. The page of the AIM I reference is G267. Any help, however basic, would be appreciated.

Regards,
Ray

[Wayne W.]

Re: '67 wiper motor

The ground end is the black wire that goes on the starter mounting bolt. It has a large lug on the end to fit that bolt. It goes directly to the heater motor and then on to the wiper motor. Both the heater motor and the wiper motor have a small spade to plug it into.

[Ray Dattilo]

Re: '67 wiper motor

Wayne,
I noted what you are saying when I looked at the schematic earlier today. I was able to trace the black wire from the starter motor to the heater blower. It was physically intact but I did not check it for electrical continuity. When I checked the ground wire from the heater to the wiper motor, sure enough, the wire was off so I plugged it back into the wiper motor but the wipers still didn't work. Keep in mind that I earlier got the wipers to work by directly grounding the motor case directly so I know the wiper motor is OK. Since the heater blower also is not working, I presume the break is in the wire from the starter to the heater motor. Does this make sense? Do you know if I can directly ground the heater blower the same way that I did for the wiper motor? Thanks again for your help and patience.

Regards,
Ray

[Norris W.]

Re: '67 wiper motor

Ray, it sounds like you may have isolated your problem with the ground issue, but if not, a wiper motor vendor sent me a very good trouble shooting reprint a couple of weeks ago when I was having problems with a newly restored unit. If you don't find a quick fix I'll be glad to e mail it to you. It involves checking described positions on both the plugs and the motor and specifically defines cause and cure by the test results. If your grounds don't fix your problem, I'll be happy to e mail it to you.