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I am going to add some led DRL and have a automatic relay. It requires a direct connect to battery and switches on by sensing a voltage change. Install directions say to connect to +/- on the battery. This would normally be a simple connection, but with the battery in the back it adds a challenge. Would there be a easy location in one of the fuse boxes to tie in or Should I look at jumping off the alternator wire that feeds too the battery?
I found a empty socket on the fuse block in the left (drivers side) engine bay box. + on the block as the is an inline fuse. The - was jumped to a ground wire. I also did a pass-though out of the box.
I have given it a few days and everything is working as it should with this automatic relay. The relay is triggered by a change in voltage when you engage the starter and turns off about 10 seconds after you turn off the car. The relay also has a wire that will trigger dimming of the DRL if you hook it into your running (parking) lights when they are switched on. I used a spade connector to the fuse box open terminal for the +. The relay has a 5 amp inline fuse. The - was tied in with a quick splice connector on the black wire in photo.
Update-- I was still getting some issues with the + power location in that the Automatic relay could get confused and not seeing the starter voltage spike and not always tuning on. I then ran a wire down to front passenger floor board main power tie in. It is now triggering the relay all the time. I am running some "8 led DRL L shape".
Do anyone know of someone who can reprogram my led drl (hockey stick) to stay on in the night it don't dim only turn off when park or head lights turn on (it's on in dash setting) 2010 e550 p2 package thanks any one in South Florida thanks
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