[zaccaglin]

Originally Posted by kikkegek

ow man! did I find a very nice and well written article on alternator, battery and accessory setup...

there are a couple of VERY NICE articles here:

http://www.madelectrical.com/electri...evymain1.shtml
http://www.madelectrical.com/electri...esensing.shtml
http://www.madelectrical.com/electri...witworks.shtml

they all come from this page:
http://www.madelectrical.com/electrical-tech.shtml

I thin I now have found out that:

1. this is my junction at the firewall:


2. and this is probably my horn relay, with also a small junction next to it:


I now know that I have to do some major reconnecting stuff in my engine compartment...and taking connections I had made a the battery to these junctions where the voltage is kept at the perfect level...

learned a lot again...

Yes that appears to be a relay, a 75A one at that. As for your alternator it should be connected to the battery using some heavy gauge wire like #4 or #2. On my 85 Burb with a 6.2L Diesel my alternator connects directly to the factory side mount on the side hand battery.

As for the junction on the firewall, it is simply an isolated 12v+ junction terminal, my truck has one as well, i have simp0le things like my horn and trailer plug 12v charge line attached to it by factory, and i have used it for things like my CB as well. The wires coming to and from it are DEFINITELY TO THIN for an alternator.

I noticed that your battery connections are not the factory side mounts that were originally covered in plastic. It appears to be an aftermarket connector crimped on with a standard crimper. Did you make that change?