1986F150Six Posted May 15, 2023 Share Posted May 15, 2023 Advertisement is labeled as being for Diesel, but the 4500 RPM tach was for gas engines and I used one in a F150 with 4.9L engine. https://www.ebay.com/itm/125910820992?epid=1786871364&hash=item1d50dea880:g:7nAAAOSwnDFkTa-4&amdata=enc%3AAQAIAAAA4DvSO%2Fnmmol08aApgH9abaxvtenxUS68SM085XpHdFNTDB5jMLeQvvhFGEGCboimaAuV89qeQ5PEm4sDj95I%2Bm%2BPZHr8cjBoZFFRGSA8gMX%2BBLIA%2FAp6%2F%2FRvFmmN%2FV%2BeiitrPPsv1%2FUE5GZYnURz5Y%2Ffo%2B%2FsU%2B%2F7VgCmLjEdh%2BV3L3QRig3v%2BoXRfJxsVw1msfQlAhdGmL96bX8zpq1QNyDeKgmJ8fyPlQIuElLYjspnYS4%2Fuvp3hfk8%2FbhhZCzqoKLY1fc0NI0lVOuReSzVsKNdaT8n6r3qZFTp9vKuh%2BWQ%7Ctkp%3ABk9SR9ClmfyDYg Link to comment Share on other sites More sharing options...
81-F150-Explorer Posted May 15, 2023 Share Posted May 15, 2023 That is definitely a medium duty F-600/900 instrument cluster circa 1992-1999, due to the electronic speedometer head. Everything should work with our pickups except for the speedometer. Link to comment Share on other sites More sharing options...
Tarheel Blue Posted May 15, 2023 Share Posted May 15, 2023 That is definitely a medium duty F-600/900 instrument cluster circa 1992-1999, due to the electronic speedometer head. Everything should work with our pickups except for the speedometer. Can anyone tell from the back view if the cluster came out of a diesel as claimed in the ad or could it be from a gas F 600/900? Link to comment Share on other sites More sharing options...
81-F150-Explorer Posted May 16, 2023 Share Posted May 16, 2023 Can anyone tell from the back view if the cluster came out of a diesel as claimed in the ad or could it be from a gas F 600/900? It's from a gas powered medium duty truck. Circa 1992/1999 F-600/900. You can tell that from the speedometer head being electric. The diesel tach had the words diesel fuel only written on them during this time frame. 1992/1999. The Gasoline tachs came in 40 x100, 45 x100, and for our pickups 60 x100. The Diesels were 45 x100 with a redline at 35x100 for our pickups.. Edited to correct an error in bold. Sorry I didn't catch that earlier. Link to comment Share on other sites More sharing options...
Tarheel Blue Posted May 16, 2023 Share Posted May 16, 2023 It's from a gas powered medium duty truck. Circa 1992/1999 F-600/900. You can tell that from the speedometer head being electric. The diesel tach had the words diesel fuel only written on them during this time frame. 1992/1999. The Gasoline tachs came in 40 x100, 45 x100, and for our pickups 60 x100. The Diesels were 45 x100 with a redline at 35x100 for our pickups.. Edited to correct an error in bold. Sorry I didn't catch that earlier. Thanks, that was my suspicion. I have a question into the seller to please verify whether gas or diesel. Says he’ll check when back in town. If it turns out to be gas, it’s gonna be mine. 😏 Link to comment Share on other sites More sharing options...
1986F150Six Posted May 17, 2023 Author Share Posted May 17, 2023 Thanks, that was my suspicion. I have a question into the seller to please verify whether gas or diesel. Says he’ll check when back in town. If it turns out to be gas, it’s gonna be mine. 😏 On the back of the tachometer where the 4 terminals are, the Diesel will have a + or - for the signal, where the gas will be battery and signal [coil]. A 4500 RPM tach with E0TF-17B316-B is a gas tach, but may be either open or enclosed https://www.garysgaragemahal.com/uploads/6/5/8/7/65879365/4242524_orig.jpg https://www.garysgaragemahal.com/uploads/6/5/8/7/65879365/1477349_orig.jpg Link to comment Share on other sites More sharing options...
Tarheel Blue Posted May 17, 2023 Share Posted May 17, 2023 On the back of the tachometer where the 4 terminals are, the Diesel will have a + or - for the signal, where the gas will be battery and signal [coil]. A 4500 RPM tach with E0TF-17B316-B is a gas tach, but may be either open or enclosed https://www.garysgaragemahal.com/uploads/6/5/8/7/65879365/4242524_orig.jpg https://www.garysgaragemahal.com/uploads/6/5/8/7/65879365/1477349_orig.jpg This is what the back of my yellow/red 4500 diesel tach looks like. And it has the # E5TF-17B316-A on its face. Hoping I can get a pic of the back of the tach in the listing from the seller sometime this weekend. Link to comment Share on other sites More sharing options...
BigBrother-84 Posted May 18, 2023 Share Posted May 18, 2023 Boy! I realize I was lucky, finding a complete cluster w/tripometer and tach. Paid it around 30$ USD at my local yard, 5 years ago. Link to comment Share on other sites More sharing options...
Tarheel Blue Posted May 23, 2023 Share Posted May 23, 2023 Boy! I realize I was lucky, finding a complete cluster w/tripometer and tach. Paid it around 30$ USD at my local yard, 5 years ago. Found this locally, it is missing the post that is grounded if installing for an 8 cyl, but I’d be using for a 6 cyl. Think it would work? Or should I pass? Is there any way to field test without installing on a running engine? Link to comment Share on other sites More sharing options...
Gary Lewis Posted May 23, 2023 Share Posted May 23, 2023 Found this locally, it is missing the post that is grounded if installing for an 8 cyl, but I’d be using for a 6 cyl. Think it would work? Or should I pass? Is there any way to field test without installing on a running engine? A bit concerned that the tach is sitting at 1300 R's with no input. So it may be stuck or way out of calibration. If the latter you can pull the needle off and put it back on at 0. But you can test by installing three jumpers: Power: The lower right connector is B+ and that goes to 12v Ground: The upper right connector is ground Ignition: The upper left connector is for the signal in and it goes to the low side of the coil, which is labeled Tach and will be DG/Y wire. Here's what some of the tachs say on the back: Link to comment Share on other sites More sharing options...
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