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Username Post: 88-91 front turn signal assemblies        (Topic#365081)
gchemist 
Member #271 Senior Chevytalk Moderator
Posts: 25432
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
05-02-21 06:53 AM - Post#2819144    

Has anyone polished up their front 88-91 plastic assemblies? Mine are starting to look hazy. The new cover protects them from sun damage. The assemblies are flat. The interior has "hump lines".

Attachment: leftlight.jpg (104.47 KB) 3 View(s)


Left light


Attachment: rightlight.jpg (104.84 KB) 2 View(s)


Right light.


'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles
'08 GMC Acadia 3.6L SLE


 
wagonman100 
Site Ambassador
Posts: 15151

Loc: Baltimore, MD
Reg: 11-27-04
05-02-21 07:16 AM - Post#2819146    
    In response to gchemist

They should polish up nicely. If they aren’t too bad you can start with rubbing compound and graduate to less aggressive compounds. If the rubbing compound isn’t enough, you can wet sand them a bit with 1,000 grit paper and then polish. You can do it by hand, but it takes a bit of work. If you use a buffer be careful of getting the lens too hot. Run the buffer at the slowest speed you can. Or if your buffer isn’t variable speed, keep it moving to not build up too much heat.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
gchemist 
Member #271 Senior Chevytalk Moderator
Posts: 25432
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
05-02-21 07:51 AM - Post#2819149    
    In response to wagonman100

I have a 12V cordless palm sander. It should turn slow enough. A few 3" discs are cheap.

Do you know of any spray/compound that can remove clear polish or paint? My other vehicle has sprayed clear on it. It needs to be stripped off before polishing the poly again. Is it even possible? Normally, I buy new assemblies then clear tint them for protection. However, the costs of self adjusting light assemblies is crazy high.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles
'08 GMC Acadia 3.6L SLE


 
someotherguy 
Senior Moderator
Posts: 29386
someotherguy
Loc: Texas
Reg: 08-01-03
05-04-21 07:42 AM - Post#2819257    
    In response to gchemist

If the light polishing won't clean them up then go ahead with fine grit sandpaper and wet sand them, then polish. I follow that up with wax/grease remover (prep spray, TSP, your choice of whatever won't attack plastic) and clean them thoroughly then apply fresh clear to them so they stay shiny for a long time.

Those housings will shine up very nicely. Even ones that are very yellowed will shine up, too - about the only ones that can't be fully revived are the ones that have tons of little cracks in the plastic.

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
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