03 f 150 remote start issues
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=126048
Printed Date: October 26, 2025 at 12:02 PM
Topic: 03 f 150 remote start issues
Posted By: cos3818
Subject: 03 f 150 remote start issues
Date Posted: February 06, 2011 at 10:44 PM
I installed a viper 5501, no security, just start and keyless entry, in my 03 F-150. This vehicle has two ignition wires, two accessory wires, and only one starter wire. My question is do I need a relay to control the starter input? I don't know how to connect my RED / black starter/acc. input so the starter disengages when the vehicle has started. If anyone knows anything about this any help would be greatly appreciated.
Replies:
Posted By: howie ll
Date Posted: February 07, 2011 at 2:03 AM
Are you saying your starter won't disengage?
Suggest you programme tach properly, that's the normal reason for it.
RED / black wire would power your ACC wires.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: cos3818
Date Posted: February 07, 2011 at 7:48 AM
Programmed the tach, but the RED / black 30 amp fused wire is also the starter input. Purple starter output wire does not receive power until that wire does. I can try reprogramming the tach again, but where is it the RED / black wire should be connected then? To eliminate confusion, the wire referred to is H3/8.
Posted By: howie ll
Date Posted: February 07, 2011 at 11:19 AM
To a constant 12V+, just like your RED / white and red wires.
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: cos3818
Date Posted: February 07, 2011 at 11:46 AM
That is where I started, however as soon as this wire is touched to 12V+ the starter engages and the vehicle cranks. I wonder if there is a problem inside my remote start module? Or maybe you are correct and there is no tach signal? Let me know if there are any thoughts on this.
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