what does this thing do?
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From: parishville NY upstate
Car: 86 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42s/posi/disc
what does this thing do?
what does this thing do ??? its a small black box and it says bosch (spelling) on top of it... it looks like a relay of soem sort.. when i first got the car that thick oarnge wire wasnt hooked up so i hooked it back up what does this thing do?
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Well I did say I may be wrong here. I had just gotten through responding to a post on a 86 firebird and it must have given me a brain fart. It does appear to have a fusible link and is on the drivers side. Thread Starter
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Joined: Feb 2003
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From: parishville NY upstate
Car: 86 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42s/posi/disc
yeah im stuped to to what its for and it does look factory to me so it has to go to soemthing... ill trace the wires tomorow and see what i coem up with.
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Thread Starter
Senior Member
iTrader: (1)
Joined: Feb 2003
Posts: 908
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From: parishville NY upstate
Car: 86 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42s/posi/disc
yes the car did coem with fog lights they arnt on the car any more but the two wiring harneses are there going to each side with the mounting brackets still there .... could this be what thats for... i seen that that oarnge wire was un hooked so i hooked it back up but i havent noticed anything new with the car at all.
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Joined: Sep 2003
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
The foglamp relay is located on that side and does have a fusible link going to it. However on my 89 it is located back towards the firewall under the hood strut.
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Senior Member
iTrader: (1)
Joined: Feb 2003
Posts: 908
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From: parishville NY upstate
Car: 86 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42s/posi/disc
im pretty sure my fan relay is on the other side i was messing with it the other day...
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Joined: Jul 1999
Posts: 917
Likes: 1
From: Long Island NY
Car: Z28
Engine: 350 TPI
Transmission: 700R4
I can double check my car tomorrow but i'm pretty sure that is the foglight relay. The fuel pump relay is on the firewall and the fan relays are next to the battery.
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Jan 13, 2024 12:29 PM




at least thats the one in my 87 