Amateur Wiring Question

jgruberman · Aug 23, 2017

baum said:
yes

I wired the turn on from the relay to the battery directly and the relay is getting somewhat warm... Is this normal? It's a 120a relay.

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baum · Aug 24, 2017

can you send a link to the relay you used? Also where did you get the turn on signal from?

jgruberman · Aug 24, 2017

FOSHIO Heavy Duty High Current Car Start Relay 120Amp 12VDC SPST 4Pin with Necessary Terminals Auto Starter Switch Relay https://www.amazon.com/dp/B07434VPFW/ref=cm_sw_r_cp_apa_QuRNzbKZ2VTMH

Wired turn on direct to battery because headlights are also in the relay block and they need always on for alarm arming/disarming

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jgruberman · Aug 24, 2017

baum said:
can you send a link to the relay you used? Also where did you get the turn on signal from?

I assume I need to wire to a switched source and being wired directly to the battery is what's causing the heat?

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baum · Aug 24, 2017

yes. a relay is a switch. when you trigger the relay with a low current wire it opens the terminals 87-30 so the battery power will flow through. when terminal 86 has no power then the current can not flow through 87-30

jgruberman · Aug 24, 2017

baum said:
yes. a relay is a switch. when you trigger the relay with a low current wire it opens the terminals 87-30 so the battery power will flow through. when terminal 86 has no power then the current can not flow through 87-30

So to ensure I understand the message your conveying, I need to put a low current through the switch and not the battery itself, correct?

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baum · Aug 25, 2017

terminal 30 goes directly to your battery (in your case the breaker). 87 goes to the "sub fuse panel" (powers it). 85 goes to a ground, 86 goes to an ignition source (cig lighter something that turns on when the truck is on).

Amateur Wiring Question

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