93 6.5 3 wire alt help

[Twisted Steel Performance]

I have a 93 CC 6.5, it has a 3 wire Alt ( not counting the large feed wire ) where my 91 had 2 wires. Someone in the past installed a power converter/alarm system. There is the small brown wire, small white wire, and a larger red wire all in the same plug on the Alt. this red wire is not the power feed wire on the back it is in the removable plug.

It looks like they cut the red wire and connected it to this power inverter ??

My question is where did this red wire connect to before they cut it, I am thinking it went to the block on the PS bulkhead but can't find the other end of it anywhere..

I am removing all this add on junk as it doesn't seem to do anything now and is sort of a mess..

 

[ak diesel driver]

I'd think it would go to the gauge or idiot light

 

[WarWagon]

This is the remote sense wire. It really only matters to the battery for proper charging voltage, however, it is usually located at the main junction to sense (and compensate for) voltage drop on the alternator charge wire. I would put it to the main junction on the passenger side where it was from the factory. (Otherwise run it to the positive battery connector at the battery. Or even the output terminal of the alternator.) I would also locate and reroute the main feed from the battery pass side to the main junction. If it doesn't rub through at the battery tray the insulation will fall off by the starter as it is routed past the starter above the heat shield. Both want to burn the truck to the ground as the fusible link is on the bus side of the wire. The battery has the power so BOTH ends should have had a fusible link.

And by the way upgrade that POS to a CS-144 and forget about replacing it every 6 months! :agreed: (I see you are upgrading a lot more in plans...)

Looks like a battery isolator it is connected too now. Check for current drains with the key off just in case it was solving a problem or they wonked something else in the wiring to stay on all the time. (Possible it went to the RV charge trailer hitch wire or a camper esp with the breaker going toward the firewall off it?)

All you want to know about the alt:

http://www.pirate4x4.com/tech/billavista/Wiring/Part2/#selfexciting

 

[Diesel Nut]

It is hooked up the the 12v on the trailer lights. So if the key is off then there is no AUX power the the trailer. Was on the truck when I got it.

 

[Twisted Steel Performance]

Thanks Nick, just working out some of the wires here...

 

[Diesel Nut]

The volt meter on the dash is low, I checked and the alt was putting out 14.5V and the batteries where getting 14.3v. I dont know if this will help but the fist terminal on the disconnect closest to the batteries has power all the times, had the aux fuel tank pump hooked up there, the middle is a ignition wire, and the last is the aux for the trailer.