tachwire for dodge ram 2007.5 6.7l diesel
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=127797
Printed Date: July 15, 2025 at 7:30 PM
Topic: tachwire for dodge ram 2007.5 6.7l diesel
Posted By: everydaydiesel
Subject: tachwire for dodge ram 2007.5 6.7l diesel
Date Posted: July 02, 2011 at 8:51 PM
Can someone please tell me where I can find the tach wire on a 2007.5 (later 6.7L version that they switched mid year)?
If someone could give me a pinout it would be greatly appreciated. Thanks in advance
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2007.5 6.7L Cummins Diesel
Replies:
Posted By: howie ll
Date Posted: July 03, 2011 at 3:51 AM
Camshaft position sensor, 3 pin plug, left of ECM, test which lead.
One will read 12V+ on ignition, one will go to ground, test the other:-
DMM, set to 20V
AC.
Black to ground red probe to suspect wire, run engine, should get around 3VAC at idle, increasing as you rev up.
Or you could use an inductive sensor such as DEI 464.
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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: everydaydiesel
Date Posted: July 03, 2011 at 9:32 AM
howie ll wrote:
Camshaft position sensor, 3 pin plug, left of ECM, test which lead.
One will read 12V+ on ignition, one will go to ground, test the other:-
DMM, set to 20V
AC.
Black to ground red probe to suspect wire, run engine, should get around 3VAC at idle, increasing as you rev up.
Or you could use an inductive sensor such as DEI 464.
Thanks ALOT for your help. It is greatly appreciated.
Right now I am having trouble finding the parking light wires. Internet says WHITE/ yellow WHITE/ gray in the lower drivers kick panel but those wires are not there. Any insight on where I can find them? ------------- 2007.5 6.7L Cummins Diesel
Posted By: howie ll
Date Posted: July 03, 2011 at 10:09 AM
Give me 5 minutes, I'll post the installation info on 07 and 08 rams in the Downloads/Manuals section on this site. Isn't the internet wonderful, I'm at least 3000 miles away. How long would this have taken back before the internet.
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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: howie ll
Date Posted: July 03, 2011 at 10:17 AM
Go to Downloads/Manuals, enter Dodge RAM, I've posted 2007 and 2008.
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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: everydaydiesel
Date Posted: July 03, 2011 at 10:37 AM
Awesome.....thank you so much for your help.
One last question. This is the diesel verson so I need to wire the wait to start....the PDF you provided says to reference directfax document 1091. Any idea where I can find that? Google wasn't very helpful. Thanks again for your help
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2007.5 6.7L Cummins Diesel
Posted By: howie ll
Date Posted: July 03, 2011 at 10:54 AM
Again, just uploaded it as DEI tech tip 1091 in the Downloads/manuals section. Saved me suggesting just that and doing a diagram.
I didn't actually look but make the delay 4 seconds, no longer.
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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: everydaydiesel
Date Posted: July 03, 2011 at 12:33 PM
You are awesome. Thanks so much for your help!
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2007.5 6.7L Cummins Diesel
Posted By: everydaydiesel
Date Posted: July 03, 2011 at 11:35 PM
So i am wiring the door trigger wires. Each door is independently wired so I extended the wire to the alarm harness. My alarm (5902 viper) has only one door trigger input, so I used a diode on each of the 4 input wires. The issue I am running into is, all four doors have to be open in order for the trigger wire to notice a change. How can i get around this?
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2007.5 6.7L Cummins Diesel
Posted By: howie ll
Date Posted: July 04, 2011 at 2:08 AM
Check your wiring and the alarm that shouldn't happen. Make sure all the diodes have their bands away from the alarm and you've wired to the alarm's green not violet.
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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.
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