Tazio Posted March 3, 2019 Share Posted March 3, 2019 My tacho isn't working, so has anyone got a readable diagram showing which wire ( and colour thereof) goes to which connection on the Tacho on early Ford cars. The wiring diagram in my build manual is so poor I cannot read any detail.Many thanks Link to comment Share on other sites More sharing options...
elie boone Posted March 3, 2019 Share Posted March 3, 2019 What system do you have ? the same Lucas unit as on a Super Sprint ? Link to comment Share on other sites More sharing options...
Tazio Posted March 3, 2019 Author Share Posted March 3, 2019 Elie, Thanks for replying. The car is a BDR, but the ignition side is same as a X flow.The original system was replaced with a Lumenition as part of the engine rebuild, everything else works just not the tacho, just need to have details of what colour wire goes where in case I transposed a wire when I replaced the dash, and as I said my copy of the wiring diagram is woeful.Alan Link to comment Share on other sites More sharing options...
garybee Posted March 3, 2019 Share Posted March 3, 2019 Tacho wires would normally go to either side of the coil on this type of engine. Link to comment Share on other sites More sharing options...
Tazio Posted March 3, 2019 Author Share Posted March 3, 2019 Gary thanks for that, I know that, what I need is the wiring layout on the tacho Link to comment Share on other sites More sharing options...
elie boone Posted March 4, 2019 Share Posted March 4, 2019 Black = earth// Green = 12v feed// White / Black signal, i can scan the diagram if you want. BTW there is only one connection to the coil if it's a Caerbont gauge but if it's a Lucas there will be a coil signal wire on both sides of the coil. Link to comment Share on other sites More sharing options...
Tazio Posted March 4, 2019 Author Share Posted March 4, 2019 Elie Just what I needed, many thanks Alan Link to comment Share on other sites More sharing options...
Tazio Posted March 4, 2019 Author Share Posted March 4, 2019 Sorted, thanks to Jonathan who sent me a diagram copy I could read, and Elie for the info, it was operator error, I had transposed the green and black!. Link to comment Share on other sites More sharing options...
Nigel Riches Posted March 5, 2019 Share Posted March 5, 2019 Is that like a "chair / keyboard interface error" ?Nigel. Link to comment Share on other sites More sharing options...
Tazio Posted March 5, 2019 Author Share Posted March 5, 2019 I replaced the dash, simply a memory error, put them back in a different order than I removed them... a bit of Murphys Law, should have took a picture. Link to comment Share on other sites More sharing options...
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