The scenario:
You're listening to some sweet tunes pumped through your van's stereo system while having a few beers with friends by the fire. You've had a great night and it's 2am before you know it. You put out the fire and turn your ignition off (like the responsible adult you are) before you "PTFO." Everything was going swimmingly until you set out for the trail the next day and your trusty van won't start. Here is how I plan to avoid this situation:
Do electrical work at your own risk! I am not a professional. If you see anything wrong with what I am doing I would love to hear from you. This being said, I have not had a problem (otherwise I would not be sharing)-so hopefully it's all gravy baby!
Its simple really, you program the time, and weather you would like it to cut the connection or complete the connection during said time. I have it set for 2 hours and to complete the connection during those two hours (disconnecting afterwards). The timer needs a positive and negative power supply to operate itself. This can be a different source than the power you would like to supply to the source (in this case the stereo) but it doesn't need to be. I added a switch inline to the timer so that I can control when to turn it on and off. You can run the negative directly into the source, bypassing the timer. For the positive supply, you run it in, then out of the timer and to the source. I use my house batteries to power the source so I just spliced right into the positive and negative on the wiring harness on the stereo, leaving the ignition from the van also connected. As far as I can tell there is nothing wrong with doing it this way. The van/alternator powers the stereo as I drive, and if I want to listen to music while parked I flip the switch on the timer.
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