Each light has a separate relay that should be mounted to the inner fender near each light. They are approx an inch square. There is also an isolator relay for both lights mounted on the radiator support. To get to it, the stock air cleaner box will have to be removed. The relay looks identical to the individual relays...but it's not the same internally.
in 1986 the headlights weren't fused the likely suspect would be the dimmer switch if it was located on the floor.
The 1986 Firebird came with either a 2.8L V6 or a 5.0L V8
1986 Pontiac Firebird 2.8 Liter Firing Order
The horns (2) are located at each side under the headlights in the front clip
Firebird - Tyers novel - was created in 1986.
Morningstar Eveningstar - 1986 The Firebird 1-1 was released on: USA: 25 March 1986
wheels
None, as the Firebird Formula wasn'toffered in 1986.
Talk2DIY Automotive - 1986 Headlights to Taillights was released on: USA: 30 September 2003
There are three headlight relays that control the operation of the headlight motors. One controls the other two. If one headlight is not raising/lowering properly, the corresponding relay is located to the front of each fender. Thesehave part # 10041733 on them. If both are not functioning properly, the relay, Part # 10022620, is located on the backside of the radiator support, on the passenger side, just in front of the air cleaner on my 1986 305 tpi trans am. The old part # for this relay was 10038949.
The taillights are supposed to go on when the headlights are activated.
obd is the vehicle diagnostic port located under the driver side dash of your car.if you already know this,,,your car is classed as an obd-1