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02-25-2021, 12:15 AM
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#1 |
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Registered User
Join Date: Jul 2013
Location: Ocala, FL
Posts: 11
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Computer Location
Looking for ideas where to mount the fuse box, ECM, and Trans control module on my 66 c10. Engine is the GM LSX376/480 with GM performance harness. Trans is 4L65e. truck is getting Vintage Air as well. Looking to hide ECM as well as possible. If you have pics of your mounting locations, that would be great!
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02-25-2021, 12:45 AM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,579
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Re: Computer Location
From past experience your gonna have a lot of crap and not much space...dont know about a gmp harness as far as length..I've always used psi harness..my next will be a BP harness..the BP has a longer wire bundle that will allow all that to be mounted under the seat...psi is to short to reach under the seat..
On my C30 I've got it all crammed above the hvac box and glove box...def not ideal...on my IH I mounted it on the cab side of the firewall, and built a cover for it..its all gonna depend on how long the harness is and what all occupies the space between point a and point b..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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02-25-2021, 06:44 AM
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#3 |
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Registered User
Join Date: Jul 2014
Location: North-central Virginia
Posts: 1,099
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Re: Computer Location
Whatever you do, don't install the ECM underneath the battery. If the battery off-gases or leaks, there shouldn't be anything critical nearby.
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1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome! |
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02-25-2021, 04:31 PM
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#4 |
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Senior Member
Join Date: Oct 2014
Location: Brandon, Manitoba, Canada
Posts: 952
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Re: Computer Location
I wish my engine harness would have been long enough to mount everything inside under the console but I wanted to keep costs down and it was cheaper to get my factory harness reworked. It only allowed me to mount on the forward part of the ds inner fender. I compensated a bit by having the air filter over it to partially hide it from view.
Where does that GM performance harness want to run? Have you mounted it on the motor to see how it lays?, which way the tail end points? |
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02-25-2021, 05:40 PM
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#5 |
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Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 1,918
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Re: Computer Location
On my 68 LS1 swap I mounted the ecm and and relays behind the glove box. I had to section the glove box liner a bit to make room. I mounted the fuse block and OBII/CEL port to the heater box. Can't see it unless you are looking for it. I then ran the engine harness out below the heater box.
Your E38 ecm and tcm are much smaller than the previous LS1 ecm's so that should help. The ecm and tcm are weather proof. The fuse block and OBII port I like to keep inside the car/truck. |
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02-26-2021, 09:44 AM
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#6 |
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Registered User
Join Date: Jul 2013
Location: Ocala, FL
Posts: 11
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Re: Computer Location
I have a decent amount of length, but not enough to get under the seat. Right now doing final assembly on the chassis while body man is doing paint. Should be able to mount cab on chassis in about 2 weeks. With the Vintage Air unit behind the glove box it’s going to be tight no matter where I go.
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03-01-2021, 11:29 AM
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#7 |
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The Older Generation
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,317
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Re: Computer Location
-
Old thread brought back to the top..... http://67-72chevytrucks.com/vboard/s...d.php?t=401254 LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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03-02-2021, 10:25 AM
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#8 |
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Registered User
Join Date: Jan 2013
Location: Imperial, MO
Posts: 999
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Re: Computer Location
Under the seat.
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03-03-2021, 10:20 PM
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#9 |
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Registered User
Join Date: Oct 2010
Location: Yakima Valley, Washington
Posts: 575
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Re: Computer Location
I’m not to this yet and working on my first so I just have questions instead of answers.
Does this box need to stay cool or have airflow? I’m not likely to do anything fancy with it but just curious if there are other things to consider when placing it.
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1951 GMC 250 Open Express Pickup 1968 Suburban C10 1971 C20 Olive “People are shocked when they find out I’m not a good electrician” Dad told me “Son, never strike a man in anger- unless you’re certain you can get away with it” |
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03-07-2021, 12:07 AM
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#10 |
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Senior Member
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,883
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Re: Computer Location
The factory puts them under the hood, so you’re pretty much wide open on mounting locations.
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
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