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) |
JeffBowlsby |
Aug 1 2013, 06:22 PM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,781 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
That's the headlight dimmer relay. Have you found the wiring schematics for your '73 on the pelican parts dot com site yet?
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HalfMoon |
Aug 1 2013, 06:28 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 |
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HalfMoon |
Aug 1 2013, 08:12 PM
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#4
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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 |
That's the headlight dimmer relay. Have you found the wiring schematics for your '73 on the pelican parts dot com site yet? Hi Jeff, Yes I have the schematic from them. And while it's helpful I'm still stumped. I can't even find where the relay is. And that's because (on non-intermittent models) there is NO relay (thanks William). Earlier in the thread there was an image that confused me about a relay being employed. Now that I know there's no relay, I can start tracing down wire continuity between the switch and the motor. There is however a rather nagging question.... The wiper motor is fused at position 8 on the fuse block, right? Shouldn't one side or the other (regardless of fuse condition-mines good) be hot with the key on? |
HalfMoon |
Aug 2 2013, 09:58 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 |
And that's because (on non-intermittent models) there is NO relay (thanks William). Earlier in the thread there was an image that confused me about a relay being employed. Now that I know there's no relay, I can start tracing down wire continuity between the switch and the motor. There is however a rather nagging question.... The wiper motor is fused at position 8 on the fuse block, right? Shouldn't one side or the other (regardless of fuse condition-mines good) be hot with the key on? Well that's a BIG problem. The wipers ain't gonna work with fuse block eight not having any power with the key on. Soooo, either the fuse block is bad or the ignition switch has a problem. I'm not seing any other problems associated with the ignition switch so I guess I'll focus on the fuse block. Saw a nice upgrade from Pelican for a blade type fuse block fer bout hundred bux.... |
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