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Wiring diagram review
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<blockquote data-quote="Bebop" data-source="post: 700750" data-attributes="member: 5925"><p>You have a stock GM LS ECM I'm assuming.</p><p>It will ground the commands. You still need relays for fuel pump, fan 1 and 2. Use the same command for the trans fan if that's what you like.</p><p></p><p>Basically, send fused power to a distributing block.</p><p></p><p>From there you send fused power to each relay and then to each electrical device. That's your power circuit.</p><p>Then you send one general fused power to a switch board that will trigger the relays. That's your command circuit for the accessories.</p><p>With a stock GM LS ECM, command (ground IIRC) for your fuel, fan1 and 2 relays will come from the ECM. ECM needs to be directly connected to hot all times via power circuit and ign power via the command circuit.</p><p></p><p>Hope this helps, otherwise you can call me this evening after 8, I'll try to make it clearer.</p><p></p><p>To make it simpler on you, run it like you don't have an ECM doing **** and then add it in the mix.</p></blockquote><p></p>
[QUOTE="Bebop, post: 700750, member: 5925"] You have a stock GM LS ECM I'm assuming. It will ground the commands. You still need relays for fuel pump, fan 1 and 2. Use the same command for the trans fan if that's what you like. Basically, send fused power to a distributing block. From there you send fused power to each relay and then to each electrical device. That's your power circuit. Then you send one general fused power to a switch board that will trigger the relays. That's your command circuit for the accessories. With a stock GM LS ECM, command (ground IIRC) for your fuel, fan1 and 2 relays will come from the ECM. ECM needs to be directly connected to hot all times via power circuit and ign power via the command circuit. Hope this helps, otherwise you can call me this evening after 8, I'll try to make it clearer. To make it simpler on you, run it like you don't have an ECM doing **** and then add it in the mix. [/QUOTE]
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