Thread: Relay of some kind.

Originally Posted by juddy

I would like to connect all the live wires etc from different sources to a proper connection point and then on to a second battery ( instead of having mant connections on one battery ) any suggestions on what product my suit my needs???

Depending on what the "different sources" are and what their power draw is, you could -

1) Buy a firewall mounted circuit breaker. Run one heavy power cable from the positive on the battery to one side of the circuit breaker, and connect all the "different sources" to the other side of the circuit breaker.

2) Same as above, but install a fuse box in place of the circuit breaker. Narva and others make them in a range of sizes (number of fuses). Run a single, fused, heavy power cable to the incoming side of the fuse box, and then connect your "different sources" separately to the outgoing connectors of the fuse box, and install separate fuses rated appropriately to the various items that you are supplying power to.

I think that the second option is the better, as if you have a problem with one electrical item, it should only blow the fuse supplying that item. This is what I have done in my Disco, with the fuse box mounted up under the dash on the passenger's side.

I did have the other option on a previous vehicle - it worked, but if you have a problem with one electrical item and it trips the breaker, then you lose power to all items that are connected to the outlet of the breaker, and it can sometimes be difficult to determine which item has caused the problem. With fuses, if you have labelled the box, you will immediately know which item has caused the problem by which fuse has blown.

Originally Posted by BMKal

2) Same as above, but install a fuse box in place of the circuit breaker. Narva and others make them in a range of sizes (number of fuses). Run a single, fused, heavy power cable to the incoming side of the fuse box, and then connect your "different sources" separately to the outgoing connectors of the fuse box, and install separate fuses rated appropriately to the various items that you are supplying power to.

I have set mine up as per above in the battery box of my 110. Soldered a single 75 amp +ve lead from battery across the input terminals of the fuse box. It does simplify things. To simplify the earth I have put in what I call a buzz bar with -ve from battery soldered to it and all my earths terminate here. I know I have a solid earth then.

Haven't taken photos but if you think it might help I can post.

Cheers
JLo