Wiring a new dash cluster
Thread Starter
Junior Member
Joined: Mar 2018
Posts: 80
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From: NY
Car: 1987 Firebird
Engine: 2.8L V6
Transmission: 700r4
Wiring a new dash cluster
hey guys I’m horrible at wiring stuff so please be discript! So I have a 87’ 2.8l v6 base so I don’t have a tach only a spedometer and fuel gauge along with a bunch of little circles that have lights that light up when something is wrong and what not. I just bought a new one that has a tach battery gauge oil pressure the ones out of formulas of the same year. How will I wire everything up? Is it just ports plug in plug out? Or worse. Also where do I wire the battery, oil pressure, temp, and tach? Sorry I know it’s a lot! Thankyouuu
Re: Wiring a new dash cluster
Most of the wiring is already there, but you need to change the idiot light switches to gauge senders. The bigger issue is that the idiot light cluster uses a cable speedometer, and the gauge clusters after 85 use an electronic speedometer. There's a thread on that, use google to search the forum for it.
Thread Starter
Junior Member
Joined: Mar 2018
Posts: 80
Likes: 0
From: NY
Car: 1987 Firebird
Engine: 2.8L V6
Transmission: 700r4
Re: Wiring a new dash cluster
Most of the wiring is already there, but you need to change the idiot light switches to gauge senders. The bigger issue is that the idiot light cluster uses a cable speedometer, and the gauge clusters after 85 use an electronic speedometer. There's a thread on that, use google to search the forum for it.
Re: Wiring a new dash cluster
The speedometer issue is a deal breaker for most people. The switches/sending unit swap is just a matter of unscrewing the old switches from the block, and screwing in the new senders. It's a headache regardless.
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