![]() ![]() If you run the main battery down (ie: use your system for an extended period with the engine off, or forget to turn your lights off) it will still automatically engage the auxiliary battery when you go to start it (provided the main battery is not completely flat, in which case a simple momentary button wired between the auxiliary battery + and the solenoid + will be enough to engage the solenoid and allow a self jump-start with a flat main battery).Īlternatively, you can wire the solenoid + through a solid state relay circuit connected to both the IGN circuit and oil pressure switch that will ONLY allow the solenoid to engage when the engine is actually running. When the key is in ACC or OFF, the auxiliary battery is disconnected. This allows them to charge together, and also allows high current starting from both batteries. That keeps the batteries connected together at all times when the key is in RUN (whether the engine is running or not). Simplest control is to just connect the two diagonal terminals to IGN power and ground. The big posts on the solenoid go to + of each battery. What are you looking to accomplish? There's a couple ways it can be wired depending on the intended application. r/electricvehicles - For electric vehicles r/diyaudio - Audio Projects & talk For the DIY'er r/soundsystem - PA's, Concert Rigs, Road Gear r/hometheater - For the HomeTheater lovers r/audiophile - Strictly High Fidelity discussion r/CarAVvendors - CarAV vendor info/deals r/CarAVclassifieds - CarAV's trading hub Please remember to restrict product promotion posts to 10% or less of your total combined self and link posts as per reddit spam guidelines. ![]() Vendors, please use this area to introduce yourselves, submit reddit-related discounts and sales, and occasionally promote new product lines. Or join the rest of the reddit Audio Network in our channel on freenode, #redditaudio!Ī subreddit for helping new enthusiasts get up and running with recommended system buildouts.Ī subreddit specifically for vendors, reddit promotions, and introductions. Requests made without using this feature will be ignored. Use the modmail link located directly above the mod list for all mod-related questions and concerns. It will help you get ideas for your new system. ![]() Recommendations Formīrowse through the CarAV Approved Gear list - a list of products that were hand-picked by our knowledgeable community. Use the Recommendations Form to get advice from our community of enthusiasts in order to help you choose a system. Q&A, Advice, Tips, tricks and tech welcome! New to CarAV?Ĭonsult the sidebar, the growing wiki or search the sub before asking questions. I know it has been done, Eric Sargent's guys did it on the white 200 in a recent video he posted.Heads, Subs, EQs, etc. It also seems silly to use a relay (I guess technically it is an integrated circuit) to switch a relay, to switch another relay. ![]() I suppose I could use a Switch-Pros button set on momentary to switch an external relay to do this, but the idea behind the switch-pros is to get rid of as many of the extraneous components as possible. How would you accomplish this with a Switch-Pros setup with the minimum number of extra components? If I was using a regular relay, I think I'd just use the input/control (pin 86) to switch the ground (on pin 30 and 87). Positive makes sense for most accessories, but I need to link to ground for the SBI. I'm doing all of my accessory switching through a Switch-Pros 9100, which (as far as I can tell) switches the positive side. It has a blue wire that needs to be grounded through a momentary switch to "link" the batteries to self jump start. I installed a Redarc smart battery isolator. The intermittent does need to go to ground when the SBI is used for self jump starting, in the BCDC/SBI combo. ![]()
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