gadgetman7

I just bought a 90 vettte, and need a good manual and wire diagram for the headlights and headlight motors, my last vette was in 1962 so I am not used to the newer CORVETTES. ( alot hase changed since then)

I found that my 90 Vette has the right side motor for the headlight door jumpered to the drivers side motor so the controls and relays operate both doors from the right side. I also have no high beam, not sure at this time if this is a related problem from the jumpped wire to the drivers side motor???
So I need some help.

need locations of relays, modules, wire diagram,
right now I am kind of lost, and need to get this right for a Pa
inspection.

I did remove the plug connectors and jumpped the motors with a battery, and both headlight motors are functional.

I also removed the jumped wire to the left side and plugged it into the normal plug on the drivers side and it will not flip the headlight door, so i put back the jumper wire for now.

Is this a relay problem or a control module Problem ?

And where is the best and most reasonable place to buy replacement parts?

Can anybody help?

gadgetman7

gbrtng

There's a control module in the front LH fender under the LH headlight that controls both
headlight motors. That's the first suspected bad part although I've never heard of one going bad.
Any salvage yard should have one. Make sure the wiring hasn't been cobbled with too.
And you need a service manual with the section 8 supplement (wiring diagrams) if you plan on keeping the vehicle.

gadgetman7

Thanks for the fast reply?

Are there relay's in the wiring past the control module? or before the control module?

gadgetman7

rodj

There is only the control module

http://forums.corvetteforum.com/c4-t...or-module.html

johnnyevans

Sound like the module has gone bad. It's mounted on the front of the driver's fenderwell. They do go bad from time to time

onedef92

Here's a pic of the module for location reference.