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Install Garage & Help Desk You've got the radio, now which cable goes where? Got questions about factory installed radios in your car? Ask any installation or help questions here and someone will get to you soon.

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Old 01-04-2006, 10:01 PM   #1
Channel Surfer
Join Date: Dec 29, 2005
Posts: 53
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Default Add-a-circuit amperage limit and aux power adapter fuse

I just did a hardwire of power in my 2001 ford expedition. I used a littelfuse add-a-circuit (which by the way I could not find locally - not at autozone, monument or kragen) for mini-fuses. I've seen these recommended several times and just wanted to pass on an item from the instructions. This instructions say that you are limited to 10amps the fuse that you are replacing. Similarly, the circuit you're adding must be less than 10amps.

This restriction affected my plans slightly. I wanted to add onto the radio fuse, but it is 25amps. I found another 10amp circuit (auto-leveler and other stuff) that I used instead.

this restriction must be due to the internal construction of the add-a-circuit.

I used an aux. power adapter from radio shack and plugged my Xact Visor power into it. I noted that the fuse on the 12 V DC power from radio shack is fused with at 10amp fuse. I used a 5 amp fuse for this circuit on add-a-fuse.

Here're are my questions:
1) is the power adapter for the Xact Visor fused? if yes at what amperage?
2) Does my fusing choice seem okay for the aux power adapter? 5 amp at the add-a-fuse. the radio shack adapter came with a 10amp. Should any of these be changed?

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Old 01-05-2006, 04:09 PM   #2
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I just used the Littlefuse Add-a-circuit during installation on my 2001 F150. I piggybacked the 5 amp radio fuse and added a 5 amp fuse to protect an XACT Replay. I haven't had any issues at all.

I hope this helps,
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Old 01-05-2006, 04:16 PM   #3
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Thanks Miike.

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