instrument lights
Thread Starter
Instructor
Joined: Mar 2007
Posts: 173
Likes: 0
From: Avon Park FL
instrument lights
Why would some of my instrument lights work and others don't? I have all new bulbs. I don't have the side,tail or head lights in not sure if that makes a difference.
Gary
Gary
Team Owner
Joined: Feb 2003
Posts: 53,985
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From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
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the lights in the dash work off a ground. make sure the back of the dash is nice a clean to make a good contact. along with the sockets
Burning Brakes
Joined: Aug 2001
Posts: 854
Likes: 7
From: dudley ma
Not sure on your 77 but my 78 has a circuit board I quess. It more more of a plastic material, behind the tach and speedo. This is were the light sockets make contact for power. there is also one behind the fuel,oil pressure gauges . I replaced mine because some lights were not working and cured problem
Burning Brakes
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
it's probably a ground issue if some work and some don't. If you rip everything apart you can ground the ones that aren't working by jumping a wire to them from ground indiviudally. If they come on individually than you have a ground problem.
But, your taillights energize from the orange wire in the connector and that energizes green which energizes the dash lights through the reostat. If that isn't working right you will have problems.
But, your taillights energize from the orange wire in the connector and that energizes green which energizes the dash lights through the reostat. If that isn't working right you will have problems.
