Back of gauge cluster wiring/bulb pic needed for my '66 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rust-O-Matic · 06-03-2016, 03:21 PM

Does anybody have a pic of the back of their instrument cluster that shows the correct locations for each of the light bulbs? I replaced the chopped up harness on mine, but there appears to be 2 more holes than there is bulbs, and I can't figure out which holes should have a bulb in them, and which 2 should be empty. I know where all of the specific bulbs go, turn signals, hi-beam, etc., I just can't figure out where the cluster lamps are supposed to go.

It's the stock cluster from my '66 C20 with gauges (not idiot lights), for reference. I have been following along with the info in this thread here:
http://67-72chevytrucks.com/vboard/s...d.php?t=562983
But the pics he shows of the back of the cluster do not appear to be correct. For example, his left turn signal bulb (blue wire on the right in the picture of the back) is definitely in the wrong hole.

Any help is appreciated.

**The Rocknrod** · 06-03-2016, 03:46 PM

Hope this helps.

Rust-O-Matic · 06-03-2016, 04:06 PM

Yes sir, I think that helps! Thanks!

After seeing yours, I realized that since I don't have a tach or vacuum gauge at either end, chances are that the bulb hole behind each of those areas are probably the two that shouldn't have bulbs in them (besides the two indicators at the bottom for 'over speed' and 'whatever-the-other-one-is').

06-03-2016, 03:21 PM	#1
Rust-O-Matic Registered User Join Date: Apr 2015 Location: Gallatin, MO Posts: 295	Back of gauge cluster wiring/bulb pic needed for my '66 Does anybody have a pic of the back of their instrument cluster that shows the correct locations for each of the light bulbs? I replaced the chopped up harness on mine, but there appears to be 2 more holes than there is bulbs, and I can't figure out which holes should have a bulb in them, and which 2 should be empty. I know where all of the specific bulbs go, turn signals, hi-beam, etc., I just can't figure out where the cluster lamps are supposed to go. It's the stock cluster from my '66 C20 with gauges (not idiot lights), for reference. I have been following along with the info in this thread here: http://67-72chevytrucks.com/vboard/s...d.php?t=562983 But the pics he shows of the back of the cluster do not appear to be correct. For example, his left turn signal bulb (blue wire on the right in the picture of the back) is definitely in the wrong hole. Any help is appreciated.

06-03-2016, 03:46 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Back of gauge cluster wiring/bulb pic needed for my '66 Hope this helps. Attached Images __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

06-03-2016, 04:06 PM	#3
Rust-O-Matic Registered User Join Date: Apr 2015 Location: Gallatin, MO Posts: 295	Re: Back of gauge cluster wiring/bulb pic needed for my '66 Yes sir, I think that helps! Thanks! After seeing yours, I realized that since I don't have a tach or vacuum gauge at either end, chances are that the bulb hole behind each of those areas are probably the two that shouldn't have bulbs in them (besides the two indicators at the bottom for 'over speed' and 'whatever-the-other-one-is').



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