Join Date: Mar 2002
Location: Austin, TX, USA
Re: Junction block behind the battery question...
I wish madelectrical had a more complete schematic for their "remote voltage sensing" tech sheet. I plan to use remote sensing with my CS130 alternator so that high current, unregulated voltage is available near the battery and that everything else comes from the regulated horn relay. Here is how I plan to do it. This probably won't work well for factory amp guage configurations though.
1. Connect a decent sized wire (8 guage) from the battery junction block to the horn relay.
2. Connect the remote sensing wire from the CS130 to the horn relay.
3. Connect the charge wire from the alternator to the battery junction block.
4. Connect high current loads without the need for regulated voltage to the battery junction block (i.e. fans, head lights).
5. Connect all vehicle power feeds to the horn relay (standard configuration - ignition, lights, etc.)
What I expect this will do for me is keep my vechicle power well regulated, while allowing the battery voltage to go slightly above the regulated voltage setting even under high current loads (wipers on, heater on, marker lamps on, etc.) This will also feed high current loads (headlights, fans) directly from the junction block through short lengths of wire using fusable links.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI