12
votes
Accepted
Jump-starting a car: connecting black to the engine block
The question says
mechanical connections and grounding wires are rarely designed for the high amperage
The ground cable goes directly (and only) to the frame in this picture
Image from Quora
So ...
- 1,848
9
votes
Jump-starting a car: connecting black to the engine block
Compare the circuits formed by the two alternatives:
positive jumper cable - positive recipient battery terminal - starter relay - starter windings - engine block - chassis - battery ground cable - ...
- 541
6
votes
Jump-starting a car: connecting black to the engine block
If you examine your car or any other vehicle, try tracing battery ground cables. Most, if not all, battery ground connects to the chassis nearby, Chassis has a ground cable to engine block. From your ...
- 956
4
votes
Accepted
How do I fix a broken connector inside the transaxle?
Here's what I did. Since both the connector and the port on the solenoid are plastic, I sort of plastic welded the two pieces together. Here's how I did it:
I took an allen wrench I didn't care ...
4
votes
Jump-starting a car: connecting black to the engine block
The question was "Do automotive manufacturers plan for this sort of jump start as part of their requirements?"
And the answer is: yes. Every car I've ever owned has a section about jump ...
- 141
2
votes
Jump-starting a car: connecting black to the engine block
On many vehicles, where the battery is not in the engine compartment, specific jump start terminals are provided; so you don't have to dig around under the rear seat or in the boot [trunk].
This is ...
- 217
1
vote
Using slightly larger wire for repair
If this is a plain-vanilla 1-conductor wire that carries only power, the car won't care if you use a heavier gauge. The one time in a car that you should not use a heavier gauge is when the wire is ...
- 5,510
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