02-24-2019, 09:17 AM
Two different things; replacing a battery; connect positive first, reason? the circuit ( negative terminal ) is not made
( disconnected ) so if you inadvertently touch the frame of the bike with a tool on the positive terminal nothing happens.
If the positive terminal is connected, tightened and the red plastic cover is in place it's time for the negative terminal to be connected, since the bike is now at the same potential ( the negative lead is connected to the frame already ) as the negative terminal there is again no risk caused by any tool touching the frame whilst in contact with the negative terminal post.
The danger here is connecting a tool from the positive red terminal to the frame and developing high currents to flow and do damage to tools, battery, terminals and body parts.
It's a bit like crossing the river with a goat, a cabbage and a rabbit on a boat, there is a safe way and the other way and i never get tired of explaining this.
In the video the battery is already connected so new rules apply ( watch out for the positive wires making contact with the frame which is negative ! ) and connecting the negative to the battery is the better way as is the case with all the other wiring jobs on the bike,
So the first rule is the safest when installing and removing a battery only and the second rule applies to all wiring on the bike and follows most installations in general.
That is why it is so confusing but that is how it works.
Good question!
( disconnected ) so if you inadvertently touch the frame of the bike with a tool on the positive terminal nothing happens.
If the positive terminal is connected, tightened and the red plastic cover is in place it's time for the negative terminal to be connected, since the bike is now at the same potential ( the negative lead is connected to the frame already ) as the negative terminal there is again no risk caused by any tool touching the frame whilst in contact with the negative terminal post.
The danger here is connecting a tool from the positive red terminal to the frame and developing high currents to flow and do damage to tools, battery, terminals and body parts.
It's a bit like crossing the river with a goat, a cabbage and a rabbit on a boat, there is a safe way and the other way and i never get tired of explaining this.
In the video the battery is already connected so new rules apply ( watch out for the positive wires making contact with the frame which is negative ! ) and connecting the negative to the battery is the better way as is the case with all the other wiring jobs on the bike,
So the first rule is the safest when installing and removing a battery only and the second rule applies to all wiring on the bike and follows most installations in general.
That is why it is so confusing but that is how it works.
Good question!