inline radio fuses
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
The owners manual should tell you that. It is a function of the radio and not the vehicle. And if you don't have the owners manual you should be able to find it on the internet.
Having said that, the constant-power "keep alive" circuit draws almost nothing so a 1 amp fuse will be more than adequate. But the switched-power fuse is more difficult to guess as it is a function of the power output of the unit. Many head units claim 20 watts/channel, and if yours is a 4-channel unit that would be a total of 80 watts. At 14 volts, which is the only place they'll kick out max power, you could conceivably draw more than 6 amps. But if you aren't going to run it at full tilt then a 5 amp fuse should be adequate. But if it blows when running it very loud go to then next size up.
Having said that, the constant-power "keep alive" circuit draws almost nothing so a 1 amp fuse will be more than adequate. But the switched-power fuse is more difficult to guess as it is a function of the power output of the unit. Many head units claim 20 watts/channel, and if yours is a 4-channel unit that would be a total of 80 watts. At 14 volts, which is the only place they'll kick out max power, you could conceivably draw more than 6 amps. But if you aren't going to run it at full tilt then a 5 amp fuse should be adequate. But if it blows when running it very loud go to then next size up.
Thread
Thread Starter
Forum
Replies
Last Post
lilbilli0naire
Audio & Video Systems, Navigation, Satellite Radio & Mobile Electronics
6
Apr 9, 2008 12:01 PM
05f250fx4
Audio & Video Systems, Navigation, Satellite Radio & Mobile Electronics
20
Sep 11, 2005 11:45 AM
Keng
Audio & Video Systems, Navigation, Satellite Radio & Mobile Electronics
6
Jun 4, 2003 10:08 AM
