james750 Posted May 30, 2009 Share Posted May 30, 2009 Ive been trying to hook up a remote tach to check my idle with the guage cluster to see if I set the pot correctly. I know that the red lead goes to the ignition coil negative and the black lead goes to ground. BUT, which wire is the negative to the coil? There are 3 spaces for connectors on the bottom of the coil and 2 of those spaces have connectors plugged in (The space closest to the rear of the truck is open). Which wire should I hook up to? Link to comment Share on other sites More sharing options...
Eagle Posted May 30, 2009 Share Posted May 30, 2009 If this is for your '90, you have a pair of yellow diagnostic connector ports under the hood, near the relay bank on the passenger side. One of those is a feed for the tachometer. I posted a pin-out for both connectors awhile back. Link to comment Share on other sites More sharing options...
james750 Posted May 30, 2009 Author Share Posted May 30, 2009 Thanks Eagle, I used search and found your post. I hooked it up and got the answers I needed. Unfortunately I need to pull the cluster and adjust the pot. Link to comment Share on other sites More sharing options...
Eagle Posted May 30, 2009 Share Posted May 30, 2009 I'm glad you found it. I went searching for it last night and search wasn't giving me anything at all. Link to comment Share on other sites More sharing options...
Pete M Posted May 31, 2009 Share Posted May 31, 2009 Could you paste a link here for future searchers? :thumbsup: Link to comment Share on other sites More sharing options...
james750 Posted May 31, 2009 Author Share Posted May 31, 2009 http://comancheclub.com/forums/search.php?keywords=Diagnostic&terms=any&author=Eagle&fid[]=2&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search 3rd post down. :thumbsup: (the [] brackets in the link are throwing of the URL code, but they are a part of the address, so I can't hyperlink it, sorry). Link to comment Share on other sites More sharing options...
Eagle Posted May 31, 2009 Share Posted May 31, 2009 See if this link works. Once we knew the date, I found the thread the hard way, so the URL doesn't include all the search parameters. The diagram (such as it is) is on the second page of the thread, toward the end. viewtopic.php?f=2&t=14777&start=15 Link to comment Share on other sites More sharing options...
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