71 plus 2 rebuild
Posted: Wed May 11, 2022 11:09 am
Hello everyone,
I’m a new owner who has been making extensive use of the search function here trying to get ahead in the installation of new looms in my 71 project.
Long story short, I recently bought the car as an abandoned restoration. The chassis had already been replaced and running gear looks serviceable. With the car came new looms and the original instrumentation. I’ve been trying to make some headway with installing the looms but it is difficult.
I have no idea whether the looms are correct or not, some wiring fits sometimes with the wiring diagrams in the workshop manual, but other times it is very different. I understand that the wiring diagrams are not too reliable…
Anyway my specific queries at this point are-
I wondered if anyone could identify what loom I might have (who made it)? - it has one central fuse box rather than smaller fuse boxes and the cabin earths are all brought together in one lump that are then soldered together but then otherwise seems to have no specific earthing connection for the cabin (the engine bay has an earthing ring that connects to the front suspension upright bolt near the alternator, whilst the second separate loom for the rear light/fuel tank etc has another ring connection to join an earthing bolt to the chassis). Where is the earthing point for dash instruments in the cabin?
I have got the engine to turn over, and am now trying to get the tacho to work. The car has a new points distributor and new alternator (it came with an original generator). I have two wires that end near the coil (white and white/purple), which if any, should feed the tacho?
I have connected the blue exciter cable from the alternator to the yellow/brown wire that as far as I can tell should light the ignition warning light in the tacho, but on turning the engine over this does not work (the tacho was earthed).
I feel like I am playing with spaghetti in the cabin right now!
Thanks for any advice.
Ian
I’m a new owner who has been making extensive use of the search function here trying to get ahead in the installation of new looms in my 71 project.
Long story short, I recently bought the car as an abandoned restoration. The chassis had already been replaced and running gear looks serviceable. With the car came new looms and the original instrumentation. I’ve been trying to make some headway with installing the looms but it is difficult.
I have no idea whether the looms are correct or not, some wiring fits sometimes with the wiring diagrams in the workshop manual, but other times it is very different. I understand that the wiring diagrams are not too reliable…
Anyway my specific queries at this point are-
I wondered if anyone could identify what loom I might have (who made it)? - it has one central fuse box rather than smaller fuse boxes and the cabin earths are all brought together in one lump that are then soldered together but then otherwise seems to have no specific earthing connection for the cabin (the engine bay has an earthing ring that connects to the front suspension upright bolt near the alternator, whilst the second separate loom for the rear light/fuel tank etc has another ring connection to join an earthing bolt to the chassis). Where is the earthing point for dash instruments in the cabin?
I have got the engine to turn over, and am now trying to get the tacho to work. The car has a new points distributor and new alternator (it came with an original generator). I have two wires that end near the coil (white and white/purple), which if any, should feed the tacho?
I have connected the blue exciter cable from the alternator to the yellow/brown wire that as far as I can tell should light the ignition warning light in the tacho, but on turning the engine over this does not work (the tacho was earthed).
I feel like I am playing with spaghetti in the cabin right now!
Thanks for any advice.
Ian