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| | | How To Connect An Aftermarket TAC to a 91? | Joined: Aug 2009 Posts: 936 Likes: 36 old hand | OP old hand Joined: Aug 2009 Posts: 936 Likes: 36 | How do you go about connecting an aftermarket tachometer to a 1991 with a 5.0 and the stock TBI (throttle body injection) system? Is there a certain type of TAC I should use? No racing, just a cruiser…just want to be aware of what the engine is doing.
Thanks
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.
| | | Re: How To Connect An Aftermarket TAC to a 91? | Joined: Nov 2013 Posts: 2,286 Likes: 153 veteran | veteran Joined: Nov 2013 Posts: 2,286 Likes: 153 | Hey there, I'd think you could take the signal wire and attach it to the negative on the coil, I believe is where it goes. If I am not mistaken. Ford or Chevy!
BBC Blue 1990 Chevy G30 L19 7.4 EXT Church Van, maternity division DogVan 1988 Dodge B250 LA series 318 Wedge 5.2 TBI A500 Cabin Cruiser '94 Dodge B350 www.xplorermotorhome.com/Xplorer MH model 230 230 hp LA series 360 Wedge MPI 5.9 A518 OD auto Old vans are getting pricey! | | | Re: How To Connect An Aftermarket TAC to a 91? | Joined: Aug 2002 Posts: 18,536 Likes: 136 Supreme Master | Supreme Master Joined: Aug 2002 Posts: 18,536 Likes: 136 | Yeah it's the negative side. Here is a video that might help. youtube link Arianrhod:2003 Chevy Astro Black Magic: 1985 Dodge B-250 Serenity:1985 Chevy G-20 The Outcast:1983 Ford club wagon Luna 1974 VW bay window transporter Freedom:1990 Ford E-150(parts van) Outcast Vanners van club Support your local 2% | | | Re: How To Connect An Aftermarket TAC to a 91? | Joined: Aug 2009 Posts: 936 Likes: 36 old hand | OP old hand Joined: Aug 2009 Posts: 936 Likes: 36 | Well I found a video on U-Tube that shows (and explains) that there is a white wire coming out of the coil pack that is not used for anything (that I am aware of anyway) but you connect the “tac” or green wire to that white wire…has a factory type connector on it (found mine today) and I will (when the the time comes) see if I can find the “correct” connector to make the connection.
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.
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