Passive Starter Kill
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=63311
Printed Date: June 07, 2024 at 2:17 PM
Topic: Passive Starter Kill
Posted By: ajbringle
Subject: Passive Starter Kill
Date Posted: September 26, 2005 at 3:48 PM
I tried the "passive starter kill" using two relays and I wired it exactly as the diagram instructs. When I energize the relays I get no power to the leads that would power the starter.... I can't seem to figure out what it could be. I bought two standard 30 amp SPST relays (w/out the 87a pole) from radioshack. Any thoughts would be great.
Replies:
Posted By: ajbringle
Date Posted: September 26, 2005 at 5:37 PM
This is the diagram I used by the way. The only diff. is my relays don't have an 87a pole. Oh yeah and the picture on the back of the relays instructs the 85 pole for ground, but I was under the impression that you can wire the coil either way. Someone has to have had this problem before. 
Posted By: ajbringle
Date Posted: September 26, 2005 at 5:44 PM
Sorry about multiple posts, but I keep remembering to add things.. When I close the switch the relays "click" and when I cut the power they release, but I get a reading of 0 volts on my meter between 87 and 30 on the "left" relay in the picture above. Prior to hitting the switch the meter (auto ranging) the numbers fluctuate which is normal. I am getting 12 volts at the switch and the grounds are good. I am using a battery jumper which is putting out 12.5 volts steady as my power and ground source.
Posted By: ajbringle
Date Posted: September 26, 2005 at 6:26 PM
Bump
Posted By: fingaz22
Date Posted: September 26, 2005 at 6:27 PM
you should see 12 volts if you have the neg. probe of your meter on chassis ground and pos. probe on 87 when the ing. key is turned to start . then 12 volts on 30 when the right relay is command on by the momentary switch witch commands on the left relay at that time you should see 12 volts. momentary switch has to be held while turning the ign. key to start
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JUST ONE MORE AMP!!!
hu,alpine cva 1005/dva 5205
sound processor,symmetry(first one).
sub amp,power 1000 the terminator.(1992).
subs,spl comp dual 1 ohms.
punch 150hd on a 10" ev.
alotofhighs
Posted By: ajbringle
Date Posted: September 26, 2005 at 6:43 PM
I have the whole ass. out of the car on a bench for now to make sure everything worked. That is where things went wrong. Are you saying that w/o it being installed I wouldn't see 12v at the 87 and 30 on the left relay?? Lost ..... argggggggggg
Posted By: ajbringle
Date Posted: September 26, 2005 at 6:45 PM
I am putting a meter on the "key side of starter" wire and the "Moter side of starter" wire in the diagram and am getting 0v. Is that how it should be?
Posted By: ajbringle
Date Posted: September 26, 2005 at 6:51 PM
Hold on.... I might be a flippin idiot here..... Is there even supposed to be 12v between 87 and 30 (key side and motor side)??? Should I be checking only 87 to ground and then 30 to ground... seperately??? I hope that I am not that stupid about this whole thing???
Posted By: fingaz22
Date Posted: September 26, 2005 at 6:53 PM
yes because on the left relay 87 is the input of the 12 volts for the starter and the 30 is the output for the starter all the relay is doing inbetween 87 and 30 is letting juice flow to the starter when it is command on by the right one if you set it all up like that pics shows and use a 12 volt source to 87 on the left relay and the momentary switch is pressed then you will see 12 volts at 30 on the left relay witch would tell you that it is going to give the starter its 12 volt to start via. 30 im me if you need more help ------------- JUST ONE MORE AMP!!!
hu,alpine cva 1005/dva 5205
sound processor,symmetry(first one).
sub amp,power 1000 the terminator.(1992).
subs,spl comp dual 1 ohms.
punch 150hd on a 10" ev.
alotofhighs
Posted By: fingaz22
Date Posted: September 26, 2005 at 7:24 PM
how did you make out? hopefully good.let me know
-------------
JUST ONE MORE AMP!!!
hu,alpine cva 1005/dva 5205
sound processor,symmetry(first one).
sub amp,power 1000 the terminator.(1992).
subs,spl comp dual 1 ohms.
punch 150hd on a 10" ev.
alotofhighs
Posted By: ajbringle
Date Posted: September 29, 2005 at 11:25 AM
I haven't messed w/ it since the above posts... been working like a dog. I will pick up where I left off this weekend and let ya know. Thanks for all your help.
Posted By: ajbringle
Date Posted: October 03, 2005 at 8:05 AM
I got it hooked up yesterday and it works great. I might eventually use a 12v source to trigger it instead of a switch. It would sure be easier than reaching for the switch which is hidden. I am thinking of the highbeam as the input. I installed and HID lighting system so I don't have highbeams anyway. I wouldn't even have to worry about the lights flashing everytime I start the truck. Do you think I would need the Diode inline w/ the relay to keep 12v from feeding back into the highbeam circuit seeing as there is NOTHING hooked up to the hight beam wire? thanks for all your input.
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