and tap into the sunroof ( http://www.autozone.com/autozone/accessories/Cooper-Bussmann-ATC-fuse-tap/_/N-25gq?itemIdentifier=32414_0_0_ ) to have switched power to it so I could run things like my GPS and radar detector (coming soon) off of. The problem I'm having is that since the fuse tap doesn't have a ground, wherever I attach the ground wire gives me constant power. Any ideas how to fix this?
Last edited by jcartaya94; 01-23-2013 at 02:53 PM.
Doesn't the Add-A-Circuit split that power source into 2 circuits that function individually?
Note I won't be running anything high amperage, just GPS and radar detector.
Depends on how you insert it. The leg of the AAC without the wire goes to both fuses and should be the power supply. The leg with the wire is the split: the lower circuit is what you plug the stock fuse into, the top one has the wire and is what you hook up to your new accessory or circuit.
If you hook it up in reverse the new circuit will have to travel through both fuses. So long as the new one is lower than the stock fuse then the stock fuse probably won't blow, but it could under unusual circumstances.
In either case, the power supply wire to the stock fuse has to be able to carry the power for both circuits safely.
One thing you can do to ensure you have no issues is to use the stock power only as a trigger for a relay, then hook the relay up to the battery using an appropriate fuse. The benefit is that the circuit will be switched by the relay and not the stock system, and the stock power supply wire won't have to carry anything more than a small extra amount that any circuit can handle.
'11 LTZ, born Aug 2010, Fairfax, KS
V6/A6, Red Jewel Tintcoat / Cocoa-Cashmere, Sunroof
Cool Mods: Drop-in K&N air filter; 20% tint, DRLs on turn signals,
Painted grilles, 1-wipe washer, WeatherTech mats, CHMSL Pulser
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