2003 jeep wrangler, alarm/remote start

ive been reading the posts and they been real helpful. but i ran into a problem and i need to post my self. im installing a galaxy auto start alarm in my 2003 jeep wrangler, manual tranny - 2.4... in order to get the auto start part working i need to hook up the well known TACH wire. ive read here that its eather grey or blue with a tan stipe and that its comeing from my ignition coil. thats great but where is the ignition coil??    if someone can add some input on this be real apreciateddd. and once i do find it how would i test it if that is the actuall wire called TACH.

thanks guys for all the help so far this stie is better then just great.   :)

You can find your coil by following your sparkplug wires starting from the plugs back to the coil. You can test for a tach signal by setting your digital meter to ac and probe the wire while the engine is running. The correct wire should show between 1 and 6 volts. The voltage will increase with engine rpm. You can also use a wire at one of the fuel injectors instead of at the coil.

i found that wire but i dont know if its the one going to the ECM. but it shows fourteen V while car running. bbtaco says it should show between one and six and go up when reving the engine which here its not the case. i found some other wires one had 2 volts the other six. but neither would go up when reved. my previouse car was a 86 mustang where everything was simple but here in this 03 wrangler i just cant find the ignition coil. is it mixed in there with something else or am i just that blind?? hey bbtaco what color do you say the tach should be.

p.s. im about to take out my instrumental panel and run it from the RPM guage...     grrr



thanks for the feed backs fellas.

to test for tach you need to be in ac volts not dc.

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but thats the way to test for the tach mobilecustoms?? 1 to 6 volts and while reving volts go up??

When I put my Viper remote start in my Jeep with a 5 speed, I used voltage sense instead of tach. I found with some experimentation that in the event that your vehicle was left in gear, if you remote start it using the tach wire it is a lot more prone to driving itself across the street than it was using voltage sense instead. With voltage sense it kind of sputters forward a couple inches and stalls. Whereas with tach it would actually move several feet. (Like I said, this was with my own experimentation into the situation. I leave my Jeep in neutral always but just wanted a failsafe just in case.) Also, I'm not sure if that type of remote start can be programmed to voltage sense for that matter so my advice may be worthless.

hmmm    what is this voltage sense you speak of?? where on the jeep is it or is it not on one?? more details please :)       thats some worthful advice   thanks raab3485.

yes that is the way to test for tach. if it is a dei you can set it for voltage sense instead of tach.

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well im going to keep looking for that tach wire. by voltage sense you mean the guage that shows how many volts the batt has in the instrumental panel. or is this something diffrent that once again i dont know anything about.

Look for the alternator and there will be a stator wire somwhere on the alternator. It will usually be a smaller gauge wire and generally by itself. The wire in question has 1-6 volts with the ignition ON and when running it is has 9-14 volts.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

i tested the wires by the alternator but none of them show the one to six volts. i hooked up the wire to a fuel injector wire but the alarm says it still hasnt detected the cars RPM. i took out the guage to find the tach but there were four bolts next to the tach. sin - and + also cos - and +, so i dont know which is the one for me.

no still havent found the tach wire, the blue/tan wire doesnt show one to six either.    i stink at this 12volt business...

also theres a brown wire from the alarm harness do i need to attach it someplace or is it just a second ignition extra.??

im trying to install a car alarm into a 03 wrangler, galaxy alarm for manual tran. i got a question... from the main alarm harness the brown wire, second igniton wire is that needed?? where do i attach it to or is it an extra feature.

thank you

https://www.directwholesale.net/diagrams/printpage.asp?ModelID=17645&MakeID=25

Since your car does not have a 2nd ignition you do not need to hook up that wire.
Tape it and leave it alone.


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Note: You Always Dont Get What You Pay For.

thanks cap for the info.

in this diag you gave me the tach is grey in the one i had it says its blue/tan    i still havent hooked that part up... but which is true??

:)

thanks again

Diretchs also says
Tachometer      gray       ac       ignition coil or coil pack

Whos diagram are you using? Maybe yours is at a different location.

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Note: You Always Dont Get What You Pay For.

The astrochart shows blue/tan @ the ECM pass. side firewall under hood.

well im haveing trouble finding the ignition coil... its not as simple as my old mustang. :( even a buddy of mine couldnt find it.     now i heard to test a tach wire if it is real a tach wire is to use a volt meter and see if it has one to six volts while engine running and while reving volts go up.   now i havent found the coil gray wire but what i tried is takeing the dash out (four spots for the RPM meter) one of them showed seven.xx volts and while reving went up, hooked up my tach wire and the alarm couldt detect it. so i tried, what aperantly is similar, is the fuel injector wires, four cylinders two wires a piece. first cylinder tried the one wire then the other. alarm still cant learn engine rpm. i found the blue tan wire but it shows thirteen.xx volts not the one to six that a tach wire aperantly supost to. the grey i cant seem to find and the coil either.            what do you guys think??

03 wrangler manual 2.4

galaxy alarm for manual tranny

hooked up tach to what i believe is the tach wire right behind the guage(constant 7.xxvolts while reving increses) and also tried fuel injector wires both.

alarm still chirps four times meaning cant detect engine rpm. am i missing something??

p.s. this site is awesome and helpful:)

Voltage sense is a setting in the alarm/remote start itself. On my Viper, you go to menu 3 using the programing button and change the engine sense from Tach to Voltage. Then you don't have to hook up the tach wire at all. I'm not sure how your galaxy system is programed/lets you program it, but look in your installation manual under programing and you should find something there.

[QUOTE=raab3485]...put my Viper remote start in my...5 speed (very unsafe) ...with some experimentation...if you remote start...prone to driving itself across the street...sputters forward a couple inches and stalls. ...with tach it...move several feet   (Neither of these scenarios lead you to think "This is unsafe either way I do it? Maybe I should get a starter designed specifically for manual transmissions.") ...just wanted a failsafe just in case (sounds safe to me~Yikes!)

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Steve G

I am wondering how did you all bypass the clutch? I have a 03 rubicon w/5spd. I bypassed the clutch on my s-10 the last round but how to with Jeep?

Thanks in advance

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03 Jeep Rubicon, many mods.
04 Yamaha R6

in my 03 wrangler i just unplugged the plug leading from the clutch and stuch a small fuse in there so its as if it would be pressed down all the time...   auto start works and i can start the car without pressing the clutch now        be carefull not to leave it in gear!!

BOTH.....very unsafe....wow!

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yea but it works...    what is the best way KarTuneMan im wondering??

Okay, with my jeep I have a factory bypass for the clutch no biggie. But for some reason the 555c will not program. Any ideas? 03 Jeep Wrangler.

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03 Jeep Rubicon, many mods.
04 Yamaha R6