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Trying to hook up my 40a renogy charger (i got the power wires done), and need a trigger wire. Looking for a wire that is only hot when engine running. I tried the CTO wire but it must not be hooked up.... (lemme go try it again lol). But it looked like it was'nt hooked up (no light on test light at anytime)
I have a 4x4 wire and aux a/c wire i have'nt tested but i dont want to use those.
The alternator wire makes the test light go off with key off, and key on. Apparently its hot with out even key on lol. That was a surprise, less my memory mistaken. I believe it was.
The red - light green tracer wire off the alternators that goes to the ignition switch are hot also with key on engine off. At the steering column at least. Maybe at the alternator its not hot KOEO. And only hot KOER.
The alternator wire makes the test light go off with key off, and key on. Apparently its hot with out even key on lol. That was a surprise, less my memory mistaken. I believe it was.
The red - light green tracer wire off the alternators that goes to the ignition switch are hot also with key on engine off. At the steering column at least. Maybe at the alternator its not hot KOEO. And only hot KOER.
Yeah, now that I think about it a little more, it probably is a direct route to the battery. Why does the truck have to be running, can't you just connect to a switched circuit? How long do you leave your truck sit around with the key on but not running?
Try the WHITE WIRE w/ a BLUE STRIPE located on the bottom of the fuse block under the hood. You will need to remove the fuse box and the bottom cover to access this wire.
Yeah, now that I think about it a little more, it probably is a direct route to the battery. Why does the truck have to be running, can't you just connect to a switched circuit? How long do you leave your truck sit around with the key on but not running?
Ya about never will i leave the key on. Ya im going to put it on a switch. Mostly just the extra 40a on startup i guess. Or if i or someone else leaves key on (i might rent it out as an RV) and forgets to turn it off. lol.
Originally Posted by Bitterroot Diesel
Try the WHITE WIRE w/ a BLUE STRIPE located on the bottom of the fuse block under the hood. You will need to remove the fuse box and the bottom cover to access this wire.
Cool deal. I might give that a go tomorrow.
tomorrow.
make it simple, and just run a wire from the battery to a relay, and have it switch with the Key ON.
Did this for the airhorn compressor, and sub.
Thats what i was thinking is just make my own circuit. I only want it hot KOER (key on engine running). Not just KOEO (key on engine off). But it'll work fine if i do that too. Its just if i leave ignition on and forget to turn the 40 amp charger off, its gonna be drain those starter batteries fast.
I read something in my research about a VSR- voltage sensitive relay. Now im just curious how to make this work KOER only.
Edit: went and watched a video on a VSR. Looks like it will work. I'll have to check the alternator voltage at KOEO. Long as its under 12.7v and not triggering the relay Sure enough my charger is set for 12.8V charge. Cuttin it close. lol.
I have a 50amp Renogy charger in my truck. locate the AIC plug near the obd2 port. It is a round plug. There is red wire with a yellow tracer on that plug. This is key on power.
i built a switch panel in my truck with a dedicated fuseblock. I have that key on wire (red/yellow) connected to a small relay under my switch panel as a higher amp key on power source. The renogy charger is wired first to that key on relay and than to a toggle switch.The switch is wired to a cole hersee solenoid in the engine bay (only $25).
I did this so i can opt to turn off the charger when i am starting my truck in very cold temperatures (So that the renogy is not drawing power away from the glow plugs or starter). But also so that i cannot accidentally leave the charger on and drain my engine batteries. Each toggle switch has a bright LED under it and the Renogy charger is the only red LED and it really stands out so i know its on. Just used this settup on 10,000 mile trip with my truck camper, worked great!! Good luck would love to see your van settup!! Safe travels see ya on the road!
Last edited by RicksConversions; Mar 19, 2022 at 03:34 AM.
I have a 50amp Renogy charger in my truck. locate the AIC plug near the obd2 port. It is a round plug. There is red wire with a yellow tracer on that plug. This is key on power.
i built a switch panel in my truck with a dedicated fuseblock. I have that key on wire (red/yellow) connected to a small relay under my switch panel as a higher amp key on power source. The renogy charger is wired first to that key on relay and than to a toggle switch.The switch is wired to a cole hersee solenoid in the engine bay (only $25).
I did this so i can opt to turn off the charger when i am starting my truck in very cold temperatures (So that the renogy is not drawing power away from the glow plugs or starter). But also so that i cannot accidentally leave the charger on and drain my engine batteries. Each toggle switch has a bright LED under it and the Renogy charger is the only red LED and it really stands out so i know its on. Just used this settup on 10,000 mile trip with my truck camper, worked great!! Good luck would love to see your van settup!! Safe travels see ya on the road!
Awesome! Thats what i wanna hear. lol. Im going to put it on a switch as well. I did a DIY 280AH LiFePo4 pack. w/ a DIY 150A discharge BMS and bluetooth, Low temp sensor. Just got the correct app downloaded and its badass. All kinds of protections and self balancing. It was tough for my little brain to comprehend but im gettin there. lol. Took it out yesterday for 1st test ride. Room for a few bikes in back. That bed flips down. And slides out to full width. Thats a sit down shower pan, 5gl bucket toilet.. Bout to put shower rod up right now. New hubcaps blingin! haha.
Originally Posted by F0rdc0wb0y
Assuming you have a glow plug relay on the van?
The post circled below in red receives 12v key on power. I use this trigger various relays on my trucks.
For sure. But thats still KOEO power it sounds like. Its fine for most things but I dont want the 40A draw with just KOEO.
Fridge/freezer and propane stove on soft close hinges. All that desk space is mostly for 2 computer monitors b/c i day trade stocks. Its close, but it works. It almost was'nt going to work, but dude at plumbing supply knew his **** and had the perfect low profile fitting to make it happen. Which was for a lab sink or somn.
The trucks have a key on 12v for the 7 wire as well, relay located in the engine compartment. Not sure how the vans handle it.
Do you have a build thread? I just picked up an E250 extended hitop van to build as a camper. Just a gasser though, very quiet!!
Gorgeous interior love the wood! Also awesome use of space in there!!!
Another tip is to put some kind of Heating pad or heated blanket on the batteries. I have a bms with a temp sensor and my batteries will not charge under 40F and fully shutdown under 0F. Figured that out the hard way when it was -10 one night! Now I’ve got a heated blanket i bought at walmart that warms the batteries when i flip the renogy on! I disconnect it when it’s warm out obviously!
That post on the GPR only receives power when the key is in the on position or the truck is running. When the truck is off there is no power to that post. Maybe I’m confused with what you are needing?
