MGB & GT Forum
Does anyone know where this electrical junction is?
Posted by gribbled
Topic Creator (OP)
Apr 19, 2024 01:07 PM
Joined 4 years ago
137 Posts
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I have a 1968 MGB. It is getting no electricity to the fuse box on the brown wire. There are brown wires connected well at the starter. I think the problem must be at the junction I circled in red. Does anyone know where it is?
Apr 19, 2024 04:55 PM
Top Contributor
Joined 2 years ago
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Dave, I think that junction is behind the dash, but I do not know why they wouldn't have the Fuse feed brown wire go to the fuse block direct from the main starter junction battery cable lug without splicing it.
Edited 1 time(s). Last edit at 2024-04-19 05:01 PM by Watauga.
Edited 1 time(s). Last edit at 2024-04-19 05:01 PM by Watauga.
oleanderjoe
Joseph Baba
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Apr 19, 2024 06:50 PM
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Joined 10 years ago
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It may be within the wrap in the harness. Follow the ROWN wire along its route toward the Starter, and yu will run into it. Good Luck.
IN ALL SUBJECTS.: For those who believe, no proof is needed. For those who don’t believe, no proof is possible.
"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough"
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Joe Baba 2021
In reply to # 4786969 by gribbled
I have a 1968 MGB. It is getting no electricity to the fuse box on the brown wire. There are brown wires connected well at the starter. I think the problem must be at the junction I circled in red. Does anyone know where it is?
IN ALL SUBJECTS.: For those who believe, no proof is needed. For those who don’t believe, no proof is possible.
"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough"
Sir Henry Royce
co-founder of Rolls-Royce .
"I take no credit for my own, of another man's fame".
Joe Baba 2021
Member Services:
Apr 19, 2024 09:30 PM
Top Contributor
Joined 15 years ago
2,876 Posts
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Stupid question, what is the VIN of your car? There are 2 schematics for 1968 NA cars. If your car is both a North American car and either Tourer GHN4-138401 to 158232, or a GT GHD4-139472 to 158370 then you have the right schematic. If after those, you should be using diagram 8. If that, then it is the same as mine and has only one brown wire between fuse block to the starter with no connector between.
Have you got a pic of the fuse block? this is from my early '69 - Diagram 8. the earlier '68 had 3 brown wires on the fuse
Have you got a pic of the fuse block? this is from my early '69 - Diagram 8. the earlier '68 had 3 brown wires on the fuse
Factor
Steve Williams
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Apr 20, 2024 07:40 AM
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Joined 2 years ago
265 Posts
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about 1 week and 1 day later...
Topic Creator (OP)
Apr 28, 2024 08:23 AM
Joined 4 years ago
137 Posts
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Closing this out: I found the junction point behind the dash, it is near the heater control to the left of the steering wheel.
It turns out that all the electricity in the car, except the starting and charging currents, flow through this junction point, It was a bit loose, getting warm and dropping voltage under load, the same thing was happening at the starter where they use an extra large push on tab connection, both of these voltage drops combined to cause a problem. All fixed now,
It turns out that all the electricity in the car, except the starting and charging currents, flow through this junction point, It was a bit loose, getting warm and dropping voltage under load, the same thing was happening at the starter where they use an extra large push on tab connection, both of these voltage drops combined to cause a problem. All fixed now,
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