No power to wipers 1973-SOLVED |
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No power to wipers 1973-SOLVED |
HalfMoon |
Jul 29 2013, 06:19 PM
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#1
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
Hi all,
I just purchased a v-8 converted 914 and inherited a bunch of electrical problems So much for "turn key" and "daily driver" descriptions.... It will be some time before I can get this vehicle to pass our state inspections... The problems (electrical) so far, No power to right side headlight-SOLVED No horn (I don't even see a wire coming up the steering colum) Wipers not working Gas gauge not working Hazard lamps not working Front turn signals not working (Not even installed) Back up lights not working My first post of electrical gremlins (the right side no power to headlights) was solved rather quickly and so I thought I'd post my attacking the next problem, there's no power to any of the 5 wires to the wiper motor when the key is on and the wiper motor switch is activated on the steering colum. I don't see that this is fuse protected but I do see it on the circuit board (56, 91-optional intermittent). I'm guessing that it's not fuse protected. What test can we come up with that will tell us if the wiper is operational and beyond that (if it is) why is the switch not controlling it? Probably the relayor a ground fault I would guess, but first things first, how to test the wiper motor? Thoughts, ideas? Additional information-In another post I found that the relay for the wiper is supposed to be above the fuse panel and accessable by removing the two screws that hold the panel in. I did this but can anyone identify the relays and a test for same? Here's a picture- Also-the PO converted this to a v-8 and in a previous conversation with him about the circuit board, he alluded to the board no longer being useable during the converstion. I'm not sure if I inturperted what was being said....but I can't find a circuit board anywhere. Not being familar with 914's and having to wait for a manul from Amazon, wait for it (the dumb question), where would the circuit board be located? Assitional information-After examining an online diagram of the "relay" board, it appears as if the PO was right and (given that he removed all the heating stuff as it was no longer useable in a v-8 conversion) the relay board was no longer neccessary. That said, it appears as if the wiper motor is fused (and relayed-as it looks like I have the intermittent switch). Still hoping someone can identify the relays from my picture and mebbe have a test for that relay, but...and this is odd, one of the diagrams I've viewed (and I've posted it) indicates one of the five wires coming off the wiper (56) as going to a fuse block (60) with slots 8, 9, 10, 11, 12. That's confusing to me as I'm only aware of the 12 block fuse panel under the steering colum. Is there another one somewhere? Lol, can't wait for Amazon to deliver my 914 book :-( More info-learning curve. After much study I do not believe my wiper system had the intermittent switch and as such I shouldn't/wouldn't expect to see a relay for it. The diagrams indicate a relay is used only with the optional intermittent. Soooo, it appears as if the wiper motor is merely to a switch and it also appears as if it gets it's power from fuse panel position eight. I've tested the fuse and it's good, yet when I have the key on and the wiper switch on, I see no power at position eight on the fuse panel (either side). That's making me think the switch is bad, as I heard these fuse circuits are fused at the end of the circuit. Soooo, any cool ideas for testing the switch? Still might be of value to have a test for the wiper motor itself too. One of em is bad unless I've msitaken where the wiper motor gets it's power from (position eight). Attached thumbnail(s) |
bulitt |
Jul 31 2013, 01:34 PM
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#2
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Achtzylinder Group: Members Posts: 4,188 Joined: 2-October 11 Member No.: 13,632 Region Association: South East States |
Is the Brown ground connected to the wiper body? Cant see from pic.
Gonna throw up a bunch of pics for you while Jeff is walking you through things. (IMG:http://www.914world.com/bbs2/uploads/post-1348-1344999768_thumb.jpg) Wiper switch thread Wiper (IMG:http://www.914world.com/bbs2/uploads/post-104-1283378183_thumb.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i16.photobucket.com-9478-1274060481.3.jpg) |
HalfMoon |
Jul 31 2013, 02:25 PM
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#3
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
Lol, I'm color blind but I think you mean this wire?
Yes it's grounded to the body of the wiper motor :-) Thanks for the images. The relay board images while cool for my files I don't need as the relay/circuit and all the associated relay's for that board have been ommittted as this is a V-8 conversion that evidently didn't require any of those circuits/relays. The image of the wiper motor and relay's was VERY interesting though! Can I assume that two relays are used when the intermittent option is in use but only one relay is used for the standard two position switch? If so, where is that relay located? Back of the fuse box perchance? Which one...lol Thanks :-) D Addedum, opps. My mistake. Only one relay is in the picture. IS it used without the intermittent option? |
barefoot |
Jul 31 2013, 03:15 PM
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#4
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Senior Member Group: Members Posts: 1,334 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States |
Lol, I'm color blind but I think you mean this wire? Yes it's grounded to the body of the wiper motor :-) Thanks for the images. The relay board images while cool for my files I don't need as the relay/circuit and all the associated relay's for that board have been ommittted as this is a V-8 conversion that evidently didn't require any of those circuits/relays. The image of the wiper motor and relay's was VERY interesting though! Can I assume that two relays are used when the intermittent option is in use but only one relay is used for the standard two position switch? If so, where is that relay located? Back of the fuse box perchance? Which one...lol Thanks :-) D Addedum, opps. My mistake. Only one relay is in the picture. IS it used without the intermittent option? |
HalfMoon |
Jul 31 2013, 03:20 PM
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#5
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
What year is that wiper motor ? My 76 does not have those two extra wires.
Are they for the intermittent function ??? It's a 73 motor as far as I know and I'm pretty sure this car does NOT have intermittent. Jeff says that the wiring changed from year to year so I'm not suprised your 76 is different. |
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