Originally Posted by donr103
Well don't get to close... seriously.. you cannot have any... none.. wires sparking anywhere.. just a guess.. do you have window fans for front windshield.. it is a 12volt power relay and they can't normally kill you.. but they sometimes carry a lot of amps.. well enough to start a big fire.. problem is that I will be it middle of the night.. or when no one is around to call fire department.. it sounds you have no experience with rv electric.. so call a tech.. out to look at it and address your issue.. if this thing sparks anytime.. THAT IS NOT NORMAL. AND IS EXTREME FIRE HAZARD... so get it fixed.. now there are great automotive 12volt electric books at auto parts store.. pick one up.. ask clerks to help you get some basic tools.. there is a whole new world out there..
If you want to try to repair yourself.. let us know.. we have some wonderful members here that are electric engineers and genius as always good luck and let us know what you did and maybe better members then me will help you
Well your right, the OP does not appear to have any electrical experience.
Your right, if it is sparking, which makes no sense looking at the picture, all the crimp connectors look fine, although not a very good job of install, this guy is going to have to learn some basics, or he is going to be spending a lot at $145 an hour to have someone poke around. You should be able to grab the housing of the relay and feel if it is warm. If not it either is doing nothing or is very low draw.
To the OP, I would suggest that to own an RV you need some basic tools. Including electrical.
First a 12v test light. A good one.
Second a good VOM with a clamp on amp meter.
A box with a large variety of crimp connectors.
A variety of shrink tube.
A good pair of Wire stripers.
A good wire crimper.
An infrared thermometer
For whatever reason this was put in, the connections are sub par. When I install a new switch or relay for an add on or replacement, I never put more than one wire in a connector, and I always put a piece of shrink tube on that I can slide down over the entire terminal and shrink so that no bare electrical parts are exposed. If I need more than one connection to a terminal I use Vampire connectors, so each wire has its own connection.
In this case, I would start by finding if any of the leads are hot 12v. Then I would put the clamp on amp meter over that to see if any load is passing through. Then I would do the same with all the other leads to see if they are passing through.
About the only way you are going to get more than a tickle out that is if you were standing in a puddle of water in bare feet and grabbed onto the wire with wet hands.
A little trick I do, which I do not recommend someone without experience do when I have a hot wire that I cannot figure out where it goes or what it does is use a jumper with 2 alligator clips and a 40 amp fuse in the middle. I'll short the wire to ground and see if it blows a fuse, or if it blows the 40 amp you know it is direct to hot battery somewhere. Virtually nothing on an RV 12 v wiring system is fused for more than 40 amps, unless it is heavy wire with a direct connection to the battery. Of course then it is time to start searching for the blown fuse to find out what it powers.
That relay is at max 40 amp 12v, and probably 30 amp as it has only 4 prongs.