Speedo cable to electric

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Jul 21, 2011 | 08:45 AM

Mtnplow

Thread Starter

Junior User

Joined: Jul 2011

Posts: 96

Likes: 1

From: Poconos Pa

Speedo cable to electric

Doing the 84 to 93 swap I thought I saw someone was successful doing this but never left info on how it was done. I'm guessing my rear is a Dana and I'm using the 93 inst. cluster. Can this be done and how ?
Thanks again

Jul 21, 2011 | 10:02 AM

85lebaront2

Old School Hot Rodder

Joined: Feb 2006

Posts: 6,472

Likes: 11

From: Exmore, VA

Unfortunately you need a different rear end. The electronic speedometer used on 92 up trucks gets its speed information from the tone ring in the rear end for the RWAL system. I am going through the same thing, I just installed a 1995 dash and a 1992 column (no air bag) in my 1986. Since I already needed a rear end housing (spun rear hub bearing on left side). I bought a 1992 dually rear from a local junkyard which has the tone ring and sensor. I also did a complete rewire of the truck to use the late power box and bulkhead connectors. I have pictures of the progress on my facebook pages.

Jul 21, 2011 | 04:52 PM

Eddiec1564

Cargo Master

Joined: Mar 2007

Posts: 2,935

Likes: 34

From: Arcadia, Fla

I seen someone made up a tone wheel that fitted onto the drive shaft just after the transmission. I had the web site till ole bill gates curse crashed and I lost it. From what I can rember, the guy figured out how many teeth to make on the new tone wheel and mounted the VSS next to it. I do not recall how the tone wheel was mounted, but I think he had flange output to mount the tone wheel and yoke.

I'm going to hopefully find that web site tonigh as that's a good way to get around the rear axle issue with newer electronics. If I find it I'll repost it.

Ok, found some info, looks like the orginal web site from AOL is gone but here's links:
http://www.fullsizebronco.com/forum/...d.php?t=157787

This site is the one with all the math to figure out how many teeth to use.
http://www.therangerstation.com/foru...ad.php?t=25540
http://www.swampsdiesel.com/content/...le_Swap_5.html

Jul 21, 2011 | 07:31 PM

Mtnplow

Thread Starter

Junior User

Joined: Jul 2011

Posts: 96

Likes: 1

From: Poconos Pa

Holy Crap someone did it, hopefully I don't have to replace my dually rear but it did POP and melt the front seal while we were towing to my house which will be my next question here tomorrow what kind of rear is it. Thanks guys

Jul 22, 2011 | 05:30 PM

Mtnplow

Thread Starter

Junior User

Joined: Jul 2011

Posts: 96

Likes: 1

From: Poconos Pa

Do I still need the comp to use the speedometer and what is your facebook 85 Lebaron

Jul 22, 2011 | 08:09 PM

85lebaront2

Old School Hot Rodder

Joined: Feb 2006

Posts: 6,472

Likes: 11

From: Exmore, VA

Mtnplow, the speedometer contains a PSOM or programable module that actually generates the speed signal for the comp and speed control. I will PM you Facebook information.