Tommyd16 Posted August 20, 2014 Share Posted August 20, 2014 Instead of tapping into existing circuits on the stock wiring for gauges, boost controllers etc is it possible to create a new circuit and keep looking stock, perhaps using the stock fuse box instead of running wires from the battery with inline fuses? Link to comment Share on other sites More sharing options...
mellonman Posted August 20, 2014 Share Posted August 20, 2014 Yes you could always add a relay which when ingintion is switched switches relay and the noramally open contacts close and you can wire the feeds to the contacts directly from the battery if one was inclined Link to comment Share on other sites More sharing options...
stevie_b Posted August 20, 2014 Share Posted August 20, 2014 I've briefly looked into using a spare slot in the fusebox for an extra circuit. I've fitted air horns and I wanted to run the feed for the air compressor via the fusebox. I gave up on that idea having seen the nest of wires below the fusebox, so just used an inline fuse connected to a +ve rail in the fusebox. Describing it like that, it sounds like I was 90% of the way there and it *shouldn't* be too hard to fit a new fuse, but I remember being stumped by it and giving up on the idea. Link to comment Share on other sites More sharing options...
Wez Posted August 20, 2014 Share Posted August 20, 2014 You can buy the pins for the fuse boxes from Toyota and run in new dedicated fused circuits, depends on what you are trying to wire up, for gauge illumination just take a feed from the existing gauge clusters. I did a massive rewire on the stock dash loom for my track car, stripped loads of excess out and then ran new wiring for dedicated items with relays and fuses etc, not a quick job though. Link to comment Share on other sites More sharing options...
Guest FullAttack Posted August 21, 2014 Share Posted August 21, 2014 (edited) Yep, as above.. Iv been wiring up a new Haltech ECU on a 1jz in an S15 last few days.. This is the fuse and relay board I made.. Totally independent of the cars original electrics.. Obviously you don't need anything as elaborate, but 1 of those relays has a big wire that splits into 5 small wires to power AFR gauge, Boost Gauge, Boost Controller and 2 spares for couple more gauges or few things that don't need to much power. Edited August 21, 2014 by FullAttack (see edit history) Link to comment Share on other sites More sharing options...
Wez Posted August 21, 2014 Share Posted August 21, 2014 Very tidy, I did something similar in mine Link to comment Share on other sites More sharing options...
Tommyd16 Posted August 21, 2014 Author Share Posted August 21, 2014 Going to have to look into this Link to comment Share on other sites More sharing options...
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