Wiring relays
So i'm having a moment here. I want to wire a relay to send power to the back of the truck can't the description is a bit vague. Relay No, i don't need that much capacity but i figure why not. ...
Forum Discussion
I don't agree with using the vehicle's body/frame for very high amperage flow. Too much resistance on the - side. I run both + and - no 2 copper fine strand gauge cables or a min of no 4 gauge copper fine strand cables between batteries. Smooth efficient reliable full current flow! There's very high amperage involved! No "choking" occurs using both cables which can or does happen with high current flow thru steel in distance with high amperage 6 or 12 volt DC. Why not get as much of the current delivered from point to point as you can reasonably? Efficiency!
I use exterior rubber coated welder cables covered with the split corrugated plastic sheathing that's insanely cheap and keeps the elements from rotting the rubber over time. These cables run under the truck back to and up thru the bed thru thick rubber protection grommets. The cables run along the frame and are very securely attached to the frame etc with lots of heavy cable ties so they stay there. The fine strand allows flexing which occurs when driving without wire breaking from flexing fatigue like heavy gauge strand wire is known for.
I use exterior rubber coated welder cables covered with the split corrugated plastic sheathing that's insanely cheap and keeps the elements from rotting the rubber over time. These cables run under the truck back to and up thru the bed thru thick rubber protection grommets. The cables run along the frame and are very securely attached to the frame etc with lots of heavy cable ties so they stay there. The fine strand allows flexing which occurs when driving without wire breaking from flexing fatigue like heavy gauge strand wire is known for.
