Tach and Speedometer lighting info

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Nov 29, 2022 | 09:47 AM

Canzo

Thread Starter

Heel & Toe

Joined: Nov 2022

Posts: 24

Likes: 12

From: East Hanover NJ

Tach and Speedometer lighting info

Hi All,

My tach and speedometer lights are not working. Yesterday I spent time to open things up and replace the bulbs but of course they still are not working. I am wondering if this is a grounding issue and does anyone have any info or pics on what my next move should be? I am fairly technical and know how to use a volt meter but have not removed the bottom dash yet to get into it. Wanted to get some info first.

This is on a 78 L82.

Nov 29, 2022 | 10:33 AM

Kerschmolar

Pro

Joined: Nov 2019

Posts: 648

Likes: 353

From: Portland, Oregon

All the dash lights share the same ground. Weak spots in the circuit are the flexible printed circuit board, dimmer switch and headlight switch. GE replacement bulbs still available.

Nov 29, 2022 | 10:41 AM

interpon

Le Mans Master

Joined: Jun 2019

Posts: 7,658

Likes: 2,470

From: Indiana

not sure what bottom dash you are talking about, as above check grounds etc..
NOTE- be sure the headlight adjustment **** is not in off position.. disregard if other lights work on dash..

Nov 29, 2022 | 05:55 PM