relay remote start 97 wrangler

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=120033
Printed Date: August 26, 2025 at 6:17 AM

Topic: relay remote start 97 wrangler

Posted By: rmcgann
Subject: relay remote start 97 wrangler
Date Posted: February 10, 2010 at 7:02 PM

Before I get any hassle, let me give a little background.

I am a Electrical Engineering Technology student at Purdue University. I am doing a senior design project to control my winch for my jeep from my iphone. One of the features is to remote start the car when the battery voltage is too low. I cannot just buy a module for remote start, that defeats the purpose of my senior DESIGN project.

I found a schematic for a relay remote start Here. The wiring for my vehicle is Here. The part I am unsure of is that the relay diagram has 2 accessory wires and only one ignition wire. The wiring of my jeep has 2 ignition wires and only 1 accessory wire. I don't know enough about remote start systems and the wiring of my jeep to mess around with it.

I would appreciate any and all help.

Thanks

Replies:

Posted By: tedmond
Date Posted: February 10, 2010 at 8:34 PM

https://www.the12volt.com/installbay/forum_posts.asp~TID~119967~PN~2

link above was a remote start using 4 relays.

if you need additional ignition circuits, they can be simply wired in by using the existing trigger.

with an extra relay

85 - ground or switched ground source if available.
86 - ignition output from relay
87 - constant 12v
30 - to secondary ignition wire.

fuse everything accordingly.

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Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert

Posted By: tommy...
Date Posted: February 11, 2010 at 1:50 PM

Heres a diagram of adding additional relays to a circuit...Instead of remote lead it would be ignition... Same as tedmond said...just a visual...

Connecting Additional Devices to the Remote Turn On Wire (link)

Using a 30 amp SPDT relay, connect terminal #87 to constant 12 volts positive with a fuse rated to the sum of the additional accessories you've added and the components you need to turn on. (If you have two fans rated at 5 amps each and a neon light rated at 10 amps, you would use a 20 amp fuse plus 200 ma for each amplifier and processor.) Connect terminal #85 to ground, terminal #86 to the remote turn on wire from the head unit, and terminal #30 to each accessory with an appropriate fuse. A fuse (not shown) could also be used between the output of the relay (#30) and the remote turn on wire of the amplifiers and/or processors for extra precaution.
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