FJOVA Posted Friday at 05:48 PM Share Posted Friday at 05:48 PM (edited) I am working on a 1972 240z (build date 11/71) with my son and we have hit a small snag with the combination switch. Everything about the switch is working well except the washer motor wiring. I press the button and nothing happens. Now, I know the pump works as it is new and I have tested it with a 12v battery. I have also tested the all wires on the switch, both on the connector and an additional blue/white wire that resides outside the connector and is currently unconnected. As it turns out, this blue/white wire that is outside the connector is the one that goes to 12v when the washer button is pressed (see pics with wire circled). I have no clue where it should be connected as there is no obvious connection point. BTW, the switch is unmolested, was fully reconditioned and works well. The car came to us largely as an unassembled project and we have made excellent progress to this point. I am sure I am missing some connection point for this wire but it is not obvious where to connect it. Any help is appreciated. Thanks. Edited Friday at 10:24 PM by FJOVA clarity 1 Quote Link to comment Share on other sites More sharing options...
Mitchel0407 Posted Monday at 07:12 AM Share Posted Monday at 07:12 AM Try and see if you can find a wiring diagram online. Unfortunately I only have one of a 197 280z which I will upload just in case as I suspect not much has been changed regarding something like the washer motor over those years. Try and follow the wiring with a multi meter and see where the power stops once you press the button. Also try and check the fuses, one might be blown or has a bad connection. It might be a stupid tip but try and activate the washer with the ignition switch in different positions. I was once lead down a rabbit hole thinking my blinkers weren’t working while in fact I needed to turn the ignition switch all the way to the on position (accessory position didn’t work). N77ZCAR-WIRING.pdf Quote Link to comment Share on other sites More sharing options...
jhm Posted Tuesday at 01:33 PM Share Posted Tuesday at 01:33 PM Anyone wanting free FSM downloads for their S30, they're available free for all production years at: https://www.xenonzcar.com/s30/fsm.php This website also carries good reference data for other-year Z cars. @FJOVA, I took a quick look at the Body Electrical sections for several years; and could not find a definitive answer to your specific question....sorry. It may be worth posting up on ClassicZCars.com, as they have a big following of folks doing original restorations. Good luck with the rest of the project!! 👍 Quote Link to comment Share on other sites More sharing options...
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