Same headlight motor module as used on the Corvette. Readily available but costly.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Where is the part number on the module? does anyone have a picture of it
GM part number 16505400 I believe that its used on the Trans Am , Camaro, Corvettes and Firebirds
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
I repaired mine by replacing the two triacs (burntout) on the circuit board. I just desoldered the components and took them to an electronics supplier. He identified them and sold me two eqivalent ones for "peanuts". No, seriously, the cost was like a few euros! It's a simple fix if you know how to solder electrics.
It was one of the first things I fixed on my car over a decade ago - still working today !
Originally posted by Frenchrafe: I repaired mine by replacing the two triacs (burntout) on the circuit board. I just desoldered the components and took them to an electronics supplier. He identified them and sold me two eqivalent ones for "peanuts". No, seriously, the cost was like a few euros! It's a simple fix if you know how to solder electrics.
It was one of the first things I fixed on my car over a decade ago - still working today !
Best regards, Rafe
No. You only got lucky so far. Others have fried the module again and often fried 1 or both motors by "Fixing" a module by doing same as you. Is lucky for them didn't cause a car fire too. Because is often Not as simple just replacing the two MOSFETs (Not Triacs) that burnt out. Very likely you have wrong replacement MOSFET because someone just look in a book/computer and gave you whatever part listed there. While Many MOSFET seems to work, the "fixed" module doesn't shut off instantly when doors are open/closed/jammed then waiting for a timer to run out and finally shut off.
I have used many "equivalent" parts and they often have problems because 1 or more specs are not the same as original. Sometime you can adjust other parts to make them work. Other times is very hard to impossible to make it work and not cause a fire or worse when they die again.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Hi Ogre, Well yes, it worked for me. And it's continued to work for 11 years! I don't claim to know as much about electronics as you (your recent post on data logging the underhood temperatures shows your exceptionnel skills😉), I just do things precisely and double check references and specs. Sorry if after 11years I can't recall if it was a triac or a MOSFET😜. Best regards, Rafe
Hi Ogre, Well yes, it worked for me. And it's continued to work for 11 years! I don't claim to know as much about electronics as you (your recent post on data logging the underhood temperatures shows your exceptionnel skills😉), I just do things precisely and double check references and specs. Sorry if after 11years I can't recall if it was a triac or a MOSFET😜. Best regards, Rafe
With all due respect to our distinguished member theocre, the headlight module is fused internally so any short will just blow those fuses not cause a fire..
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Originally posted by Dennis LaGrua: With all due respect to our distinguished member theocre, the headlight module is fused internally so any short will just blow those fuses not cause a fire..
Nope. Module is fused but can still melt the module or motors even cause a fire without blowing those fuses or Fusible Links. The internal fuses only blows for direct short to ground or nearly so for wires to or motor themselves. Even then may not blow because fuses are heavy and relay wires are not. The Relay and/or MOSFETs can burn and not blow these. Cliff fried the module Twice and both motors the second time and did Not blow any fuse. Others have fried the module and not blow the fuses too. Module Board and most others are likely FR4 fiberglass... "FR" means Flame Retardant and doesn't support parts fires and likely only reason second fire stopped at the fried parts. But Module Case is PP, Polly Polypropylene, and can melt or burn. Chis have posted quick drawn module schematic showing how the internal fuses are installed.
A couple days ago my son got two units from salvage. Upon looking at them, they are exactly like his 88 Fiero part even though one is from a 93 Firebird and the other is from a 2000 firebird. Even so, neither unit worked in the Fiero. Also, can anyone tell me what year Camaro used this part?
I found John N fail... Did blow a fuse as MOSFET fried but you can't trust the fuse. Cliff and others have not blown it/them as module and worse fries.
[This message has been edited by theogre (edited 09-26-2018).]
A couple days ago my son got two units from salvage. Upon looking at them, they are exactly like his 88 Fiero part even though one is from a 93 Firebird and the other is from a 2000 firebird. Even so, neither unit worked in the Fiero. Also, can anyone tell me what year Camaro used this part?
I have upgraded my 86GT to gen2 headlight system about 8 years ago. Over the years I have purchased multiple control modules with less than satisfactory results. I have since given up the module route and for over a year now persuaded building my own version of the headlight control module.
My current version is under testing in the car and has proven satisfactory for my operation. I recently completed building an upgraded version that I will be installing in the coming week or so replacing relays with Mosfets.
[This message has been edited by Cajun (edited 09-27-2018).]
I have upgraded my 86GT to gen2 headlight system about 8 years ago. Over the years I have purchased multiple control modules with less than satisfactory results. I have since given up the module route and for over a year now persuaded building my own version of the headlight control module.
My current version is under testing in the car and has proven satisfactory for my operation. I recently completed building an upgraded version that I will be installing in the coming week or so replacing relays with Mosfets.
MCU control is possible but most people can't design and/or program "arduino" and related to work safely because can't understand OE module. Not even with Chris drawing in front of them because of many reason plus can't see chip functions. I can see many things and take some guesses about the chip because of work i do but still not all.
Many will program for time up/down and motor directing and think done. Worse many uses bloated libraries taking clock time and/or added other modules/breakouts that often eat power on top of MCU board. May seem to work but when, not if, the motor(s) have problems the DIY "module" is no better then ID10t trying manually run the motors up/down. The module and/or motors will fry over time or right now depending exact issue. If you think fuses will be enough then the module/motors will die or you will replacing fuses often. Fuses of any type are not make to be a main power switch.
Warning: If the DIY "module" draws more power vs OE... You can have a "dead" battery parked for a few days. More so in winter because even a low battery freezes much easier and that will wreck them. AGM batteries are not immune to freeze damage either.
I would never say an aftermarket can not be as good as OEM. I have seen some really talented people do some amazing work on programming FPGA's as a replacement for dead and obsolete electronics. Several of them even decapped IC's and reversed engineered them to program directly into these FPGA's. All of these people can simply work from schematics of the boards and IC's (if available, otherwise the IC will need to be decapped). They have even reversed engineered encryption on the chip level. Many of these people do this for "fun".
It is possible to emulate older larger circuit boards with multiple IC's on a single FPGA. I have personally seen a single 4"x5" board driven with a single FPGA and associated drivers replace a bank of 4 circuit boards (CPU driven that accesses code on several PROM chips and requires a bank of RAM) and take up a fraction of the space on a piece of equipment where input and output timing and output currents are fairly critical. This particular board also only sells for US$225 (which is a steal vs the OEM boards can run up to 5x the cost if you can find working ones). FPGA are getting fairly popular in industry for replacing obsolete controllers as well as other electronics based hobbies.
Just a matter of someone with these skills willing to build one.
There is always gonna be someone on here that is going to tell you you should have, could have, or would have done this that or the other. As I have indicated the setup works for me. And has been doing so for over a year with no I'll effects of problems.
What's good for the goose is not necessarily good for the gander.
[This message has been edited by Cajun (edited 09-30-2018).]
