03 Ford F350 Diesel Tach

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=26091
Printed Date: August 24, 2025 at 7:59 PM

Topic: 03 Ford F350 Diesel Tach

Posted By: dan oie
Subject: 03 Ford F350 Diesel Tach
Date Posted: February 08, 2004 at 9:51 PM

I can't find a tach wire for this vehicle. I have tried the options listed for the tach signal in other posts and tech info. and can come up with nothing. I'm beginning to wonder if this vehicle has 04 wiring in it. Please help with any info. on finding the tach for this vehicle. I tried tachless start and it will not crank long enough, probably because its diesel. Is there a usable tach wire behind the instrument panel? Thanks, Dan

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Dan Oie

Replies:

Posted By: fordfixer77
Date Posted: February 08, 2004 at 11:28 PM

hi dan if the f350 isa6.0ltr the tach wire is under the inside fuse panel taped to a harness,there are a bunch of wires there.the one you need is the GREEN / WHITE it has black shrink wrap on the end.hope this helps. ted.

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ted s

Posted By: NowYaKnow
Date Posted: February 09, 2004 at 5:59 AM

As mentioned should be GREEN / WHITE from the driver side underdash area. Look to the left kick near the ebrake area, then follow that up till you see a thick harness running up towards the fusebox. There will be a couple wires taped to that harness. They have heat shrink on the tips. This will be the same wiring weather the truck is an 03 or an 04. If your cluster has an RPM gauge then you also should be able to find a tach signal at the back of the cluster..Good luck,

Mike

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