Electronic Speedometer on a 91 YJ - JeepForum.com
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post #1 of 4 Old 10-27-2006, 08:44 PM Thread Starter
Mr. Tobes
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1995 YJ Wrangler 
Join Date: Jan 2006
Location: Pacific, WA
Posts: 221
Electronic Speedometer on a 91 YJ

I bought an electronic speedometer from autometer and can't figure out how to install it. The 91 YJ originally had a mechanical speedo, so the wiring harness has no wire for the speedo. But I put a new transfer case on which has an electronic sender. Summit has a sender, but I am not sure if it will work. It look like a mechanical to electronic adapter. It can be found here:


If this won't work, how do I go about hooking this badboy up?


Last edited by Mr. Tobes; 10-28-2006 at 01:10 PM.
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post #2 of 4 Old 10-28-2006, 06:28 PM Thread Starter
Mr. Tobes
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1995 YJ Wrangler 
Join Date: Jan 2006
Location: Pacific, WA
Posts: 221
Does this make sense to anyone? Please let me know if I need to clarify something.
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post #3 of 4 Old 10-28-2006, 06:44 PM
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Location: bucks county, pa
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hmm..dont no much about them but buy what u need.. i belive thats what u need here are the install insturctions

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post #4 of 4 Old 10-28-2006, 11:22 PM
XJ on 37's
leftlanetruckin's Avatar
1998 XJ Cherokee 
Join Date: Jul 2006
Location: missouri via blackpool,lancs.
Posts: 10,625
does the gauge manufacturer not make a harness for it?
electronic speedo's work off a pulse system i think, and you would need to match the pulses to the gauge.
otherwise the cheapest option would be to trace the wiring for an electronic speedo in the shop manual.....basically it needs a power feed, then the wire to the gauge. there will be wire(s) to the ecm also, but you will prob b ok to bypass these, as they would mainly be used for the cruise, auto tranny etc.

1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover with a 6.0 LSx
1994 YJ, 4.3/700R4/OME SOA, etc
Western Star 4900EX 4 axle.
4.3/700r4/new frame buildup (YJ)....

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