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Post Info TOPIC: Replacement headlights T3 for 1970 full size Pontiac


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Replacement headlights T3 for 1970 full size Pontiac


I currently have halogen bulbs and finding them dim at night compared to my daily driver that has LED, just wondering if anyone has any good suggestions for replacement LEDs that are affordable ? Thanks in advance.....



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1970 Pontiac 2+2 covertible 400 cubic inch

U.S. Embassy car when new - in the family since 1973



Canadian Poncho Superstar!

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First question; Are your lamps on relays?



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65 Laurentian post, 67 Grande Parisienne 4 door HT. 
 


Poncho Master!

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I second the relays. Without relays for each headlight there is in my opinion too much voltage drop for halogen bulbs to work as they should. I had a motorhome with H-4 halogen bulbs and relays made a big difference.

Paul

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My car is all original so guess it does not have relays.....guess I need to get up to speed on what needs to be done to upgrade.



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1970 Pontiac 2+2 covertible 400 cubic inch

U.S. Embassy car when new - in the family since 1973



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I am just reading about relays now.....so will do that first and perhaps that in itself will make a big difference.....are all of the relay kits pretty much the same ? Thanks.



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1970 Pontiac 2+2 covertible 400 cubic inch

U.S. Embassy car when new - in the family since 1973



Poncho Master!

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This is amazon, but there are lots of suppliers. This is the type I used on my motorhome.

www.amazon.ca/gp/aw/d/B07W862G1R/ref=sspa_mw_detail_0

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Canadian Poncho Superstar!

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The difference is dramatic with relays. With relays you are simply powering the lamps much closer to the power source. Eliminating that long (and old) body feed harness run from the horn relay into the car, through the headlight switch, across the high/low floor switch and back out to the lamps. The old wires out to the lamps now become the relay triggers.

Basically, on the B Body, find the high beam and low beam feed in the forward harness up along and under the left fender. 70 should be Green for high beam, tan for low.

Cut through both wires and add a Bosch style relay into each circuit. Feed the relays from the horn relay buss, and make sure to clean up your grounds.

11389983725_4834964813_o.jpg



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65 Laurentian post, 67 Grande Parisienne 4 door HT. 
 


Canadian Poncho Superstar!

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In your subject line you mention T3's, then in your text you mention you're running halogens. Which of the 2 is your car running?

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



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I thought T3 referred to the size of the headlghts......so was not aware that would cause confusion. The outer headlights are halogen and the inner high beam headlights are just std sealed beam.



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1970 Pontiac 2+2 covertible 400 cubic inch

U.S. Embassy car when new - in the family since 1973



Canadian Poncho Superstar!

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Macker wrote:

I thought T3 referred to the size of the headlghts......so was not aware that would cause confusion. The outer headlights are halogen and the inner high beam headlights are just std sealed beam.


 Here's a link to what T3's look like:

https://canadianponcho.activeboard.com/t55770371/1968-71-t3-headlights/

 

 



-- Edited by seventy2plus2 on Wednesday 14th of October 2020 09:39:48 PM

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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop
72 GMC Sierra

 

 



Poncho Master!

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Funny, I have the original T3s in my 67 Toronado, They work great.
Brian

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Poncho Master!

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www.eastwood.com/american-autowire-headlight-enhancement-relay-kit-with-gm-relays-500431.html

If you dont want to gather the parts yourself


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1967 parisienne 

 



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Thanks for all of the feedback, I ended up ordering two new lens on Amazon and put in ignite 9003 LED bulbs from canadian tire. Overall the end result seems to be a big improvement....perhaps the fact that the LEDs draw a lot less power negates the need for relays. Looking forward to trying out on the road at night.



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1970 Pontiac 2+2 covertible 400 cubic inch

U.S. Embassy car when new - in the family since 1973

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