MG B electrics
Discussion
Getting fed up trying to decipher wiring diagrams in the Haynes manual, so thought I'd ask here:
Had some routine bad electrical faults over the years - left indicator freezing on, both indicators failing to work when the headlights were on sort of thing, then the front headlights working but not the rear. I decided to have a proper look at things last week, which led to me replacing the fuse box holder (4 fuse one) as it's a 78 B. This sorted the rear light problem, but not the rest. I therefore decided to replace a couple of the old female connectors that fit onto the spade connector ends that looked pretty corroded. I've now got working indicators and headlights, but an erratic brakelight, erratic fuel and temp gauge and erratic wipers and wiper. They sometimes all work properly, they often fail to work together, especially when there's bumps or hard cornering involved. This suggests another bad connection somewhere...
Long and short of the query is, does anyone know if these defective connections are likely to go through the fuse box or are they part of a relay somewhere that I can't figure out from the wiring diagram?
Had some routine bad electrical faults over the years - left indicator freezing on, both indicators failing to work when the headlights were on sort of thing, then the front headlights working but not the rear. I decided to have a proper look at things last week, which led to me replacing the fuse box holder (4 fuse one) as it's a 78 B. This sorted the rear light problem, but not the rest. I therefore decided to replace a couple of the old female connectors that fit onto the spade connector ends that looked pretty corroded. I've now got working indicators and headlights, but an erratic brakelight, erratic fuel and temp gauge and erratic wipers and wiper. They sometimes all work properly, they often fail to work together, especially when there's bumps or hard cornering involved. This suggests another bad connection somewhere...
Long and short of the query is, does anyone know if these defective connections are likely to go through the fuse box or are they part of a relay somewhere that I can't figure out from the wiring diagram?
Well finally sorted it - looks like a bad connection and faulty earth on one of the black wires coming up from the ignition side. Cost me a fair few headaches, but only about 60p for the connector! Cheers for all the advice. Next stage is replacing the rad and having the manifold skimmed.
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