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Old 10-02-2020, 01:20 AM
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Success! DSP Amp Replacement Adapter Harness (With Wiring Pinouts)

Thought I would post this as it might help someone in the future. These are the pinouts of the 4 harnesses on the LCI DSP amp. I think it's the same for all DSP amps but am not 100% sure as I referenced the TIS 4.8is wiring info. I know all of the info in the charts below has been posted before (I referenced some of it to create this) but I wanted to consolidate it as I had to view a few different posts and TIS diagrams/pinouts to get all the info I was after.

Reason for this is I am going to create an adapter harness for my aftermarket amplifiers using a, presumably, broken DSP amp I bought off Ebay to harvest the connectors. Will update this post with the results of that this weekend (hopefully).

I apologize for the large image. I use a 32" 4k monitor so it all fits on 2/3 of the screen for me. If you want the excel file to make it easier to read, here it is: Gdrive DSP Xcel Link. If anyone sees anything that needs correction, let me know. Hopefully not as it took me 2 days to make because I am slow and easily distracted.

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Last edited by crystalworks; 10-04-2020 at 03:29 PM.
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Old 10-02-2020, 05:57 PM
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If you can successfully create and duplicate that harness, that would be a hit item in these pages! Iím certainly interested!

Good luck, CW.
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Old 10-04-2020, 03:38 PM
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Well... it's not fun to do. And it won't win any beauty contests... but everything tested out with the adapter harness and the diagram is correct. All speakers responded to 3v button cell battery test.

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The big one is pretty easy. The 26 pin one is not as "fun."

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No soldering station shaming please. That thing has been serving me faithfully for 15 years. Though, lol I guess I could get a new sponge for it. Also I do need a higher temp iron. This one had a rough time flowing the solder well enough to loosen the pins when removing connectors from the DSP amp board.

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Helper station is a MUST. Impossible without it.

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And the almost finished product. I could have depinned the unused connections but meh. Now that I know polarity is good, connections are correct, and there are no bridged solders/shorts, I need to seat the back of the connectors in something. Do you guys recommend silicon sealant (like gasket maker) or maybe an epoxy? I was thinking of building a form around the connectors and filling with silicon or epoxy. I want the harnesses to hold up to plugging/unplugging forever. I'm leaning epoxy.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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Old 10-04-2020, 03:47 PM
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Yep, epoxy is your friend here. All our motorsport connections get epoxy on the boots and on built potted connections.
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Old 10-04-2020, 03:53 PM
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Quote:
Originally Posted by Overboost View Post
Yep, epoxy is your friend here. All our motorsport connections get epoxy on the boots and on built potted connections.
Was hoping you'd chime in OB. Epoxy it is then.

Thank you for not mentioning how, ummmm, unprofessional it looks.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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Old 10-04-2020, 03:54 PM
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Quote:
Originally Posted by crystalworks View Post
I'm leaning epoxy.
Definitely go the epoxy route

Unfortunately I don't know the name of the product but it's basically a softer epoxy or REALLY hard silicone depending on how you want to look at it

It's regularly used in the boating industry to coat the back of PCBs for waterproofing or to make security modules and other electronics tamper proof.

I'm guessing one of those 2 part syringe epoxies would work also but it might be too runny
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Old 10-04-2020, 03:55 PM
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Quote:
Originally Posted by Overboost View Post
Yep, epoxy is your friend here. All our motorsport connections get epoxy on the boots and on built potted connections.
Is it regular ol' epoxy you use or the stuff I was trying to describe?
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Old 10-04-2020, 04:07 PM
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Damn. That is bad ass! Well done, CW!

So when do you start taking orders?!
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Old 10-04-2020, 04:23 PM
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Quote:
Originally Posted by timmyc View Post
Damn. That is bad ass! Well done, CW!

So when do you start taking orders?!

I had the same thought!
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Old 10-04-2020, 05:07 PM
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Quote:
Originally Posted by crystalworks View Post
Was hoping you'd chime in OB. Epoxy it is then.

Thank you for not mentioning how, ummmm, unprofessional it looks.
Quite to the contrary CW. The fabric tape looks makes your wiring harness look absolutely stock and tidy. Well done my friend!

Quote:
Originally Posted by c-bass View Post
Is it regular ol' epoxy you use or the stuff I was trying to describe?
We use a 2 part epoxy from ResinTech RT125 out of the UK on all our motorsport looms but I guess any 2 part epoxy with a resin and hardener would work fine.

http://www.resintech.co.uk/downloads/tds/RT125.pdf
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