remote start in 98 F250
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=42102
Printed Date: January 18, 2026 at 9:18 AM
Topic: remote start in 98 F250
Posted By: ATDneWI
Subject: remote start in 98 F250
Date Posted: November 02, 2004 at 10:19 AM
i have a 2 way alarm/remote start i purchased off ebay....i have the wires hooked up right according to diagrams...there is a 3rd ignition wire in the harness for the truck....but only 2 coming out of the alarm.... one ignition,one A/C (for ignition 2?) do i need to hook up that 3rd ignition wire somehow? someone told me ide have to wire up a relay for the 3rd....how would i wire this relay up? the relay that came with the alarm has 4 wires total, 2 purple,1white and 1yellow wire.... any help would be greatly apreciated....thanks
Replies:
Posted By: ATDneWI
Date Posted: November 02, 2004 at 10:21 AM
also as it sits right now when i try to remote start it, the dash lights go one, fuel gauge and everything goes up...then it all shuts off, it does not turn over at all...
Posted By: misterjimbo
Date Posted: November 02, 2004 at 10:29 AM
What kind of unit is it?
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 10:34 AM
the box says "royal guard car alarmsecurity system" nothing else....and "professional made...."
Posted By: misterjimbo
Date Posted: November 02, 2004 at 10:42 AM
How many ign outputa does it have?
How many acc outputs?
You should power up all the wires at the ignition harness. The only one that is not neccesary is the black green wire. That keeps the radio from turning on durring remote start.
I am not familiar with that r/s unit. On many less costly units you need to add relays to make everything work. Also check previous posts on this site for a wire diagram, it never hurts to have two. Many times the wires are incorrect on one so you can referance the other.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 10:52 AM
Posted By: misterjimbo
Date Posted: November 02, 2004 at 11:15 AM
I am on a mobile device with a 3 in screen, so I cannot see the words on the diagram. I can look at it when I get home, if you can wait. make sure you have the corect wiring chart for the car as well.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:08 PM
i have yellow wire from alarm to starter wire in ignition harness....brown from alarm to the accessory wire in ignition harness...blue from alarm to ignition#1....and GREEN/ air conditioner wire from alarm to ignition#2....thats all i have hooked up so far and like i said before all lights go on in the dash, but then shut off, no cranking over or anything
Posted By: misterjimbo
Date Posted: November 02, 2004 at 12:18 PM
Are you sure the wire is labeled a/c for air conditioning. The ac wire should not be ignition, because then the ac would be blowing while the car is trying to crank. Put your meter on it, when you try to remote start does the green wire on your alarm go on, then off, then on again?. If so then it is an acc 2 not ign 2. what wires on the vehicle do you have these acc and ign wires connected to?
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:29 PM
how would i wire a relay to power up the 3rd ignition wire? the relay i do have has 4 wires...2 green 1 white and one yellow
Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:29 PM
how would i wire a relay to power up the 3rd ignition wire? the relay i do have has 4 wires...2 green 1 white and one yellow the two green
Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:29 PM
how would i wire a relay to power up the 3rd ignition wire? the relay i do have has 4 wires...2 green 1 white and one yellow the two green are
Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:30 PM
how would i wire a relay to power up the 3rd ignition wire? the relay i do have has 4 wires...2 green 1 white and one yellow the two green are 14
Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:30 PM
how would i wire a relay to power up the 3rd ignition wire? the relay i do have has 4 wires...2 green 1 white and one yellow the two green are 14 gauge
Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:35 PM
i just checked it, the green wire stays lit while powering up then all wires go off....and still no cranking.....the brown wire i have hooked up as acc1...crap im sorry for those repeated posts....i must have hit the wrong button....sorry guys
Posted By: misterjimbo
Date Posted: November 02, 2004 at 12:41 PM
Okay. Is there a grey yellow wire in the car? Test it that should be your acc1 that is the heater and ac circuit. There might be two grey yellow but both turn on if you power one up. As for the relay... It is the pins that matter not the colors. If the relay is in a holder remove it. The pins should be labeled 30 87 87a 85 and 86. Now does the alarm have a ground output for the 3rd ign? If so you hook it up as follows. Pin 86 to the negative 3rd ign pins 85 and 87 to fused 12v and pin 30 to 3rd ignition wire on truck.
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Posted By: misterjimbo
Date Posted: November 02, 2004 at 12:47 PM
The tech info I have lists only one ign wire and that is red light green. And two acc.wires grey yellow and black green. the starter wire is red light blue and that is all you should need to power up in order to get it to start. I used to work at a ford dealer for a few years so I have done many of these. Are you using a tach signal? If so did you learn the tach signal? If you did not use a tach signal try hooking one up. Also make sure that you have a good ground.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 12:54 PM
i dont think there is anythingfor the 3rd ignition at all....and no the system does not have a tach wire, it has a battery charge indicater wire or oil pressure sensor as one wire...that was gonna be my next question is how would i hook that up...see ive installed remote starts before...a DEI valet 551R in my explorer no problem but this one is harder lol
Posted By: ATDneWI
Date Posted: November 02, 2004 at 1:00 PM
and the relay is missing 87 but has 87a
Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:02 PM
Did you read my previous post about the correct wiring for your ignition harness? Instead of hooking up pin 86 to the wire that does not exist on your car starter just ground it. Put pin 85 to either the acc. Or ign wire and hook the others up as stated previously. Make sure that you know wether it needs to be an accessory or ign. There is a difference. As for the oil temperature mass floww inflator pressure regulator coffee dispensor wire, never seen one before.
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Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:04 PM
Did you read my previous post about the correct wiring for your ignition harness? Instead of hooking up pin 86 to the wire that does not exist on your car starter just ground it. Put pin 85 to either the acc. Or ign wire and hook the others up as stated previously. Make sure that you know wether it needs to be an accessory or ign. There is a difference. As for the oil temperature mass floww inflator pressure regulator coffee dispensor wire, never seen one before. The relay is missing 87? Then it is a kill relay. Are you sure it is missing. Is the relay in a harness if it is remove the harness and the pin should magically appear.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 1:05 PM
Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:14 PM
Just so you know I have never seen a bull dog tech sheet that had more than 2 wires labeled correctly. Do you have a test light or meter? Is it to test that red black I think that is an acc wire. And I know for a fact that the black green is an acc wire and it doesNOT need to be powered up from the remote start.
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Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:17 PM
Also for faster replies you can email me directly at knowledge@tmail.com today since no one else seems to be posting on this topic.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 1:24 PM
wired it up like you say and it still isnt working
Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:30 PM
Okay, so assuming that all your connections are correct, is there a setting for tach sense or voltage sense? If so set it to voltage. Does the car attempt to crank? Is the starter wire putting out 12v? The car starts fine with the key? Is there a kill switch on the car? If so is the remote start starter output on the starter side? There are a lot of questions to be asked of the current situation.
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 1:35 PM
all wires are tight and good the dash lights turn on, hooked up like you said...still wont crank over, and i tried a test light on the 3rd ign. that the relay is hooked up to and it doesent seem to get power.....
Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:43 PM
Just to clarify...
Yellow from alarm to red blue on car
Brown fromalarm to grey yellow on car
Blue from alarm to red green on car
Green from alarm to red black on the car
Is there a neutral safety input on the unit if so you may have to ground that. I wish I had access to the diagram that you sent, it would be much easier to help. I won't be home until 5 30 michigan time.
Also it might have something to do with that oil wire you mentioned earlier. What do the instructions say to do with it?
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Posted By: ATDneWI
Date Posted: November 02, 2004 at 1:45 PM
the instructions only say what i said...really what the wire is for...it doesent really have instructions...but a diagram picture to go by...kinda halfass...
Posted By: misterjimbo
Date Posted: November 02, 2004 at 1:48 PM
You said that the 3rd ignition relay is not working. Did you find pin 87? You do not need 87a, just 87. Also.the page load up real slow on this thing I am on. If you could email me that would be quicker. I listed it a few posts ago.
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