48v to 12v reducer

[Jsmth86]

In there process of installing a reduced to run led lights. I have the black and yellow connected to the lights and the red and black wires connected to battery pack. After connecting red positive wire to pack then attempting to connecting black wire to negative the battery I am getting a battery spark. What am I doing wrong?

Thanks

[Newbuggyboy]

What's the year, make, and model of your cart? Is the 48V 4 x 12v? 6 x 8v?

[Sergio]

The reducers usually have capacitors that generate a decent spark when you first connect them and they charge.

One way to avoid the spark is to introduce a resistance in line with the converter positive power wire (the negative should be on Controller B- if using an OBC) before you connect to the battery post.

You can use a 40w or 60w incandescent light bulb (old school inefficient ones), just touch the base of the bulb on the battery post and the wire on the light bulb threads.

After about 5-10 seconds the converter capacitors should be charged so you can move the wire to the battery post without a spark.

[Jsmth86]

2008 precedent 4x12v. Connecting reducer to first positive (start of pack) and last negative (end of pack)

[Sergio]

If you have an OBC the converter negative should be connected to Controller B- or the provided 12ga black wire with a Yellow bullet connector.

[yawood]

Originally Posted by Sergio

If you have an OBC the converter negative should be connected to Controller B- or the provided 12ga black wire with a Yellow bullet connector.

The reason for that is that if you just connect it to the pack negative the OBC will never "see" what the reducer is pulling and will not return the correct amount of energy when you recharge. By connecting to the B- connection the black wire going through the OBC lets the OBC know how much has been taken from the batteries.