School me on wiring

whitepunkonnitro said
Why...why??? I have been building cars for nearly forty years, and have never, ever even once considered adding a relay to ANYTHING.
And fuses? Only when absolutely totally necessary.
Anything you add to a cars electrical system presents another potential point of failure and complication to trouble shooting issues when they do arise.
And relays... Think about this for a second.
You are taking an electrical load that can be handled with a hard wire, and transferring it to a set of contact points, which will eventually dirty from arcing and reduce the quality of the circuit you are trying to improve.
Totally counter productive

Not trying to start a pissing match here but relays are

whitepunkonnitro said
Why...why??? I have been building cars for nearly forty years, and have never, ever even once considered adding a relay to ANYTHING.
And fuses? Only when absolutely totally necessary.
Anything you add to a cars electrical system presents another potential point of failure and complication to trouble shooting issues when they do arise.
And relays... Think about this for a second.
You are taking an electrical load that can be handled with a hard wire, and transferring it to a set of contact points, which will eventually dirty from arcing and reduce the quality of the circuit you are trying to improve.
Totally counter productive

It's pretty simple really, in the case of a electric fuel pump. A novice might find a keyed hot wire and simply tap into this wire to run the pump. If amp draw is too high and wire not rated for the current draw it could burn the car to the ground. Now if same wire was used to simply trigger a relay it's no problem! That's what relays are for. That's why new vehicles use them for vertually everything. It's also why ma Mopar used a starter relay. When you start adding things to a harness that wasn't designed to have it you need to take that into account