Samba Member
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Location: Wisco
| Posted: Sun Mar 05, 2017 1:48 pm Post subject: Need help 1973 Ignition switch wiring | |
| PO hacked out ignition and headlight switches. Slowly piecing them back together and stuck on ignition wiring. Searched as well as studied schematic.
1) Replacement switch includes a gray and brown (not seeing in schematic)? 2) Red (30 circuit) goes to? Fuse box? 3) Red/black (50 circuit) goes to? 4) Black (15 circuit) goes to? 5) Black/yellow (x circuit) goes to? Thanks in advance for the help | |
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Location: Surrey B.C. Canada, but thinking of Ukraine
| Posted: Sun Mar 05, 2017 2:32 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Click twice on the diagram below to make it big.
The ignition switch is labelled "D" (tracks #8 through #15), fuses are called "S", wires from the switch connect to the unfused side of the numbered fuse for that circuit. Make sense? Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here Слава Україні! | |
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Samba Member
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Location: San Angelo, Texas
| Posted: Sun Mar 05, 2017 2:37 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| You can get current flow diagrams (which I love) online for your year model. A factory manual would be helpful too. looks like you are going to need one. The red/blk one connects to a clear terminal at T8, it should be under the dash, one wire clear (yellowed probably) connector with the same color wire going to it. The black wire goes to S11 on the fuse box and it turn ends up powering the + side of the ignition coil amongst other things. The big red wire goes to S8 on the fuse box and should be hot all the time. The black and yello goes to S10 on the fuse box and powers the light switch, 4 way flashers and a few other things VWoA factory trained line tech 75 till 90 or so | |
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Samba Member
Joined: March 31, 2016
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Location: San Angelo, Texas
| Posted: Sun Mar 05, 2017 2:41 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Oh, I forgot. The brown wires are grounds (negative) and the grey wires, I think, were for the annoying key buzzer so f*ck them. _________________ '69 Karmy, '69 Camper, Meyers clone, '65 drag bug, 10.78 @ 128 (sold it) '51 Dodge farm truck, '09 MB E350 '18 MB E400, '65 Plymouth Valiant convertible and a '19 Ford F250 King Ranch (nicer, but dirty, farm truck) VWoA factory trained line tech 75 till 90 or so | |
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Samba Member
Joined: March 31, 2016
Posts: 1220
Location: San Angelo, Texas
| Posted: Sun Mar 05, 2017 2:48 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| As a general rule, the red wires are hot all the time, the blacks and are hot with the key on and the browns are grounded. The blues are warning lights, the blacks with tracers are turn signals, running lights, headlights etc.... Might help ya. _________________ '69 Karmy, '69 Camper, Meyers clone, '65 drag bug, 10.78 @ 128 (sold it) '51 Dodge farm truck, '09 MB E350 '18 MB E400, '65 Plymouth Valiant convertible and a '19 Ford F250 King Ranch (nicer, but dirty, farm truck) VWoA factory trained line tech 75 till 90 or so | |
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Samba Member
Joined: March 31, 2016
Posts: 1220
Location: San Angelo, Texas
| Posted: Sun Mar 05, 2017 4:25 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| The reason some of the wires terminate at the "S" points is because the German word for fuse is sicherung....pronounced, zee-ker-ung _________________ '69 Karmy, '69 Camper, Meyers clone, '65 drag bug, 10.78 @ 128 (sold it) '51 Dodge farm truck, '09 MB E350 '18 MB E400, '65 Plymouth Valiant convertible and a '19 Ford F250 King Ranch (nicer, but dirty, farm truck) VWoA factory trained line tech 75 till 90 or so | |
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Samba Member
Joined: September 28, 2012
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Location: Wisco
| Posted: Sun Mar 05, 2017 6:18 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Perfect, thanks guys! | |
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Joined: August 19, 2004
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Location: Mt. Shasta
| Posted: Mon Mar 06, 2017 3:29 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| I use two wiring diagrams. The current flow diagram like busdaddy posted plus the regular diagram for a 1972. The wiring is almost identical, but this way I have two resources. I understand the 72 diagram better and stink at reading the current flow style. | |
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Samba Member
Joined: September 28, 2012
Posts: 315
Location: Wisco
| Posted: Mon Mar 06, 2017 5:18 pm Post subject: Re: Need help 1973 Ignition switch wiring | |||
I'm learning!
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Samba Member
Joined: February 12, 2004
Posts: 51681
Location: Surrey B.C. Canada, but thinking of Ukraine
| Posted: Mon Mar 06, 2017 5:52 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| If the early style diagram works better with your head then use it, the 72 is fairly close to most later models, but do confirm the same wires are on the same fuse numbers with the later one just in case. _________________ Rust NEVER sleeps and stock never goes out of style. Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here Слава Україні! | |
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Samba Member
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Location: Wisco
| Posted: Sat Mar 11, 2017 4:17 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Most of it sorted, but a bit confused on the fuse box call outs. Black to S11, but existing black wire is on the 10th fuse from the right (I'm assuming fuses are numerical?) Are there S markings on the fuse Bo's that I'm not seeing? | |
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Samba Member
Joined: February 12, 2004
Posts: 51681
Location: Surrey B.C. Canada, but thinking of Ukraine
| Posted: Sat Mar 11, 2017 6:12 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Fuses are numbered from left to right, sure that wire placement isn't a PO suprise?
_________________ Rust NEVER sleeps and stock never goes out of style. Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here Слава Україні! | |
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Samba Member
Joined: September 28, 2012
Posts: 315
Location: Wisco
| Posted: Sun Mar 12, 2017 8:11 am Post subject: Re: Need help 1973 Ignition switch wiring | |
| Looks like I have a few more presents from the PO, main wire off the starter into the fuse box (red w/white stripe) plugged into 8 instead of 9. I'll be going through every wire in the fuse box now... Sigh. | |
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Samba Member
Joined: February 12, 2004
Posts: 51681
Location: Surrey B.C. Canada, but thinking of Ukraine
| Posted: Sun Mar 12, 2017 10:27 am Post subject: Re: Need help 1973 Ignition switch wiring | |
| Some may not be your PO's doing, if you look at fuses #8 & #9 on the diagram you'll see a thin black line between them, same with #11 & #12 and some of the headlight fuses, those fuses are joined by a bus bar (metal strip) on the unfused side of the fuse box, the red/white can be attached to the terminal at either fuse and still do the same thing. But to aid comprehension and simplify things it's best you replicate the diagram as best as you can, makes future diagnosis so much easier. Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here Слава Україні! | |
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Samba Member
Joined: September 28, 2012
Posts: 315
Location: Wisco
| Posted: Sun Mar 12, 2017 7:05 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| Interesting point. Couple of other oddities 1) No wiring for fresh air blower to fuse box 2) No jumper from fuse 9 to 7 3) Replacement ign switch has a gray and brown that are not in schematic. Otherwise, got the entire dash buttoned up.
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Samba Member
Joined: February 12, 2004
Posts: 51681
Location: Surrey B.C. Canada, but thinking of Ukraine
| Posted: Sun Mar 12, 2017 7:16 pm Post subject: Re: Need help 1973 Ignition switch wiring | |||||||
That's only installed if the optional fresh air fans are installed in the front ducts.
Later models don't have the jumper, another cost saving measure like less bolts attaching the dash to the body.
Likely a Brazilian made switch, grey is key buzzer usually, other wires are used with parking lights and security systems not available here. Is that a Euro model bus?, or did you just strip the dash of it's padding?, if Euro the diagram is different. Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here Слава Україні! | |||||||
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Samba Member
Joined: September 28, 2012
Posts: 315
Location: Wisco
| Posted: Sun Mar 12, 2017 7:24 pm Post subject: Re: Need help 1973 Ignition switch wiring | |
| US bus (Northern California delivery and spent 20 years abandoned in the SoCal desert) I've just always liked the European dash boards. Welded up as many holes as I could (really should have done ash tray!) | |
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