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GeneralRe: Bridge car, confused... Pin
Nelek30-Apr-23 11:35
protectorNelek30-Apr-23 11:35 
GeneralRe: Bridge car, confused... Pin
Mircea Neacsu30-Apr-23 13:01
Mircea Neacsu30-Apr-23 13:01 
GeneralRe: Bridge car, confused... Pin
englebart30-Apr-23 15:25
professionalenglebart30-Apr-23 15:25 
GeneralRe: Bridge car, confused... Pin
jmaida30-Apr-23 16:20
jmaida30-Apr-23 16:20 
GeneralRe: Bridge car, confused... Pin
snorkie1-May-23 2:29
professionalsnorkie1-May-23 2:29 
GeneralRe: Bridge car, confused... Pin
jmaida1-May-23 8:42
jmaida1-May-23 8:42 
GeneralRe: Bridge car, confused... Pin
Peter Adam30-Apr-23 20:20
professionalPeter Adam30-Apr-23 20:20 
GeneralRe: Bridge car, confused... Pin
PhilipOakley1-May-23 0:54
professionalPhilipOakley1-May-23 0:54 
There is no perfectly 'right' answer, and it depends on the state and type of the two car batteries, and the quality/capability of the alternator on the 'better' vehicle.

Historically, the main issue was that the alternator diodes would 'blow' during the jump-start if the donor car was running. The surge current into the dead car's starter was too high, especially with good jump-lead connections.

You also need the donor car and it's battery to have enough capacity when the two vehicles are initially connected (both vehicles off, mediocre donor trying to feed large dead battery could result in two nearly dead batteries, sigh).

Then there a lot of 'safety' choices as to which leads to connect securely first, and what happens when a lead slips, hence it's normal to connect the two chassis last (little chance of failure and short circuit at this stage, compared to slipping of the power terminal).

That said, on larger modern vehicles the alternator diodes now have good capacity (see articles/ videos [e.g. merlin's garage] on using them as welders!) so blowing the diodes on those beasts is less likely.

Finally, just because there's a lovely big terminal next to the battery's negative, doesn't mean it is actually a secondary chassis connection. On my car it's the common point for the positive connections - Oops.
GeneralRe: Bridge car, confused... Pin
Ed Kautz1-May-23 5:16
Ed Kautz1-May-23 5:16 
GeneralRe: Bridge car, confused... Pin
Nelek1-May-23 11:26
protectorNelek1-May-23 11:26 
GeneralRe: Bridge car, confused... Pin
trønderen1-May-23 16:35
trønderen1-May-23 16:35 
GeneralRe: Bridge car, confused... Pin
Nelek2-May-23 1:58
protectorNelek2-May-23 1:58 
GeneralRe: Bridge car, confused... Pin
trønderen2-May-23 3:44
trønderen2-May-23 3:44 
GeneralRe: Bridge car, confused... Pin
jschell2-May-23 11:36
jschell2-May-23 11:36 
GeneralRe: Bridge car, confused... Pin
trønderen2-May-23 14:17
trønderen2-May-23 14:17 
GeneralRe: Bridge car, confused... Pin
theoldfool1-May-23 12:44
professionaltheoldfool1-May-23 12:44 
GeneralRe: Bridge car, confused... Pin
trønderen1-May-23 16:39
trønderen1-May-23 16:39 
GeneralRe: Bridge car, confused... Pin
Jörgen Andersson1-May-23 21:38
professionalJörgen Andersson1-May-23 21:38 
GeneralMessage Closed Pin
30-Apr-23 5:38
Member 1496877130-Apr-23 5:38 
GeneralRe: Can AI be the answer ? Pin
0x01AA30-Apr-23 5:48
mve0x01AA30-Apr-23 5:48 
GeneralRe: Can AI be the answer ? Pin
Richard MacCutchan30-Apr-23 5:54
mveRichard MacCutchan30-Apr-23 5:54 
GeneralRe: Can AI be the answer ? Pin
Gerry Schmitz30-Apr-23 7:10
mveGerry Schmitz30-Apr-23 7:10 
GeneralRe: Can AI be the answer ? Pin
Ravi Bhavnani30-Apr-23 10:00
professionalRavi Bhavnani30-Apr-23 10:00 
GeneralRe: Can AI be the answer ? Pin
Gerry Schmitz4-May-23 7:32
mveGerry Schmitz4-May-23 7:32 
GeneralRe: Can AI be the answer ? Pin
Dan Neely1-May-23 3:51
Dan Neely1-May-23 3:51 

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