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Old 12-05-2014, 07:29 PM   #8 (permalink)
j12piprius
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a power wire to the led and switch

Quote:
Originally Posted by 2000mc View Post
Why string a power wire to the led and switch? Setting up switches and indicators on the ground side lets you make a ground wherever it's convenient, and makes an added on wire that shorts to ground less impactful
Using a NO switch, as you suggested in post #2, the relay is off when the injectors are on. The injector positive can't power the led and switch, because that would keep the injectors on, instead of turning them off. I'm not sure what you mean by the ground side, as the load circuit can be used in either direction.
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