I will be rewiring my 3 A-pillar gauges, but want to do it right (clean install). Right now I'm tapped into the same 12V keyed source using those crimp splicers. I was never happy with that solution, and want a more professional one.
What I plan to do is splice into that 12V source once, and run the power to a barrier strip (or some other distribution/terminal box). That way I can just screw in new connections that need a keyed power source. My current 12V source is right behind the instrument cluster (can't remember which wire off the top of my head).
So here are my questions:
1) I'm sure my current 12V source is already fused. If I'm running, say, 4 gauges off that power source should I consider changing the size of the fuse? If so, what size?
2) One other solution I might go with is to power the gauges straight from the battery, using a relay that kicks in using the 12V keyed source. If I did that, what size fuse should I go with?
3) Finally, is there a formula, or rule of thumb for knowing what size fuses to use depending on the scenario?
Thanks in advance.
What I plan to do is splice into that 12V source once, and run the power to a barrier strip (or some other distribution/terminal box). That way I can just screw in new connections that need a keyed power source. My current 12V source is right behind the instrument cluster (can't remember which wire off the top of my head).
So here are my questions:
1) I'm sure my current 12V source is already fused. If I'm running, say, 4 gauges off that power source should I consider changing the size of the fuse? If so, what size?
2) One other solution I might go with is to power the gauges straight from the battery, using a relay that kicks in using the 12V keyed source. If I did that, what size fuse should I go with?
3) Finally, is there a formula, or rule of thumb for knowing what size fuses to use depending on the scenario?
Thanks in advance.