Hi, I pulled out the dashboard on my Daytona because the heater controls were REALLY tight and discovered that they had been mounted upside down putting tortuous bends into the cables. While I was in there, it became apparent that the wiring was a bit of a dog’s dinner. The loom and wires all look good, but they’re badly routed and there are quite a few unconnected wires. They all seem to be part of the main loom, but does anyone have any idea what they might have been for? Thanks, Paul Image Unavailable, Please Login Image Unavailable, Please Login
I poked around with my little bore camera, but did not find those wire pairings in my dash (though could easily have missed something). There was a purple wire going to the power tap near the steering wheel, but it was not paired with an orange wire. The only orange wire I saw went to the steering-column harness. Same for the only red-with-non-spiral-black that I noticed. I did not notice any red+green anywhere.
Found a wiring diagram online: Ferrari 365 GTB/4 Operating And Service Manual (Page 124 of 130) | ManualsLib Note, the legend is a few pages earlier. I probably have a clean copy at home and can look in a week or so.
I have copies of 4 different factory provided wiring diagrams for Daytona and can say none nowhere near accurate or complete when compared to what I’ve actually found in several car. I would say the factory diagrams can be up to 40-50% accurate/complete. Based my personal documentation & observations with cars I’ve worked on over couple of decades I have made two, maybe +/-90% accurate and complete diagrams so far, but can’t say for sure which market or production timeline they might be most applicable.
Hi Alex, Many thanks for making the time and effort to investigate for me, it is much appreciated. I'm wondering if these extra wires are a legacy from the car's racing history. There may have been additional circuits that aren't required on road cars. Thanks again, Paul
Thank you Kerry. I have a copy of the owners manual and the workshop manual, both of which have versions of a wiring diagram, so I now have three versions. They are all very poorly laid out and very difficult to trace lines. A also own a Dino 208 GT4 and someone has produced a colour version of the wiring diagram with al the wires shown in the corresponding colours, which makes life much easier, but I haven't yet found one for a Daytona. Thanks again, Paul
Well, your car was not a factory racer, so if your harness is original, then there probably would not be anything special about it. Even for the factory competition cars, it seems likely that any special wiring would be outside the main harness. It is possible that those wires are associated with US-spec wiring, if so, I might have them tucked-up someplace (I mostly just look around at wires that were actually hooked-up, and my car is a Euro). Also, based on the 4 holes for switches on your dash, my guess is that you have the "Hazard" switch; mine does not, so it is obvious that there will be some wiring differences. What color are the plastic "ends" on the other wires in the harness? Most of them on my car are red, rather then black, and the wires on my car show more signs of color-fade then the pictures you posted, so it is possible that the restorers replaced the harness when they refreshed the car.
Although my car was sold into Hong Kong as a new car, it is a UK spec RHD car. Most, if not all the connector sleeves are black rather than red and the harness is in good condition, so it may well have been replaced during restoration, although I haven't seen any invoices to that effect. However, it was a total bare metal, nut & bolt restoration, not simply a "refresh". I can also confirm that it has the fourth switch for hazard flashers. Paul
This is another one of the unconnected wires behind my dashboard. Anyone have any ideas what this means? I think it says “REMOVE KEY SWITCH” Image Unavailable, Please Login
Possibly something to do with the wiring circuit for the under dash warning buzzer* indicating your ignition key is still in the switch when the drivers door is opened. * In LHD (US market) cars it is located above and slightly left of the clutch pedal. I don’t know if such circuit/system existed in non-US market cars as it might’ve been only a DOT requirement at the time or if it did, I don’t know where the buzzer might’ve been located in RHD cars.
Thanks Timo, that would make sense. I’m pretty sure I don’t have a buzzer, so it will stay unconnected. I’m thinking that maybe my car has had a replacement (new or used?) wiring loom fitted at some point, which may have come from a US car. Paul
Based on all other oddities or unusual issues you’ve encountered and shared about it so far, that wouldn’t surprise me.
I am working my way through them though. I now have a working light in the ashtray and the drains for the aircon condensation are now properly connected.
You have me beat on at least one front then; my ashtray light does not work... (it is all about "chipping away")
