What are these for?
Thread Starter
Junior Member
Joined: Apr 2012
Posts: 47
Likes: 0
From: Brantford, ON, Canada
Car: 1987 Camaro
Engine: 2.8L V6
Transmission: 700R4
Axle/Gears: 3.42 Non Posi
What are these for?
With our motor swap, and the new computer, we have to find a place for a fuse box. Can anyone tell us:
1: What are these things, and their purpose(s)?
2: Are they necessary with a new wiring harness?
We know that the main wiring harness is under the three other things. What we want to know is what the three other things are? Are they relays? Sensors?
We are putting in a 4.3L motor with harness and computer from a 2000 S-10.

This is an '88 Camaro and we did not have a motor and transmission when we bought it. Any help appreciated. Thanks
1: What are these things, and their purpose(s)?
2: Are they necessary with a new wiring harness?
We know that the main wiring harness is under the three other things. What we want to know is what the three other things are? Are they relays? Sensors?
We are putting in a 4.3L motor with harness and computer from a 2000 S-10.

This is an '88 Camaro and we did not have a motor and transmission when we bought it. Any help appreciated. Thanks
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: What are these for?
the two on the left are relays; prob radiator fan and fuel pump
Joined: Feb 2012
Posts: 709
Likes: 2
From: S.New Jersey
Car: 90 Iroc Vert
Engine: 5.0L
Transmission: 700R4
Axle/Gears: 3.73
Re: What are these for?
On my 89 bird the ESC (elect spark control) is mounted there, about 2.5" sq, flat, w/four prongs.
Senior Member
iTrader: (1)
Joined: Dec 2012
Posts: 808
Likes: 5
From: Tucson, AZ
Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
Re: What are these for?
Looks like Fuel pump relay, MAF power relay, MAF Burn-off Relay. thats how its set in my car. The ESC goes underneath them.
Supreme Member
iTrader: (35)
Joined: Aug 2006
Posts: 1,470
Likes: 1
From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: What are these for?
The short answer is yes you need them and the relays depends on the options the car has and what is in it. In my LS swap 2 are for the fans and one for the fuel pump





