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#1 |
Registered User
Join Date: Jun 2018
Location: Los Angeles, CA
Posts: 27
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New Gear Vendors Controller Wiring
Hi All,
I wanted to share that Gear Vendors has come out with a new overdrive controller that is made by MSD. This controller is smaller, and much more robust than the previous one. Additionally it is specifically designed to stand up to electrical noise typically generated by newer alternators and high discharge ignition systems. I wanted to share this because it is not well known, and I had a bunch of issues with the old controller and noise. Additionally when they sent me the new controller this last Friday (around 280 bucks to upgrade) they forgot to include the wiring diagram. I had to wait until Monday to call them and have them email it to me. There was zero information on the controller on the internet; both Gear Vendors website and MSD’s. To save anyone else the trouble, I have included the wiring diagrams for MSD part number 2790GV so anyone in the future can find them. Cheers, Danny |
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#2 |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,517
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Re: New Gear Vendors Controller Wiring
Interesting, let us know the results.
I have 2 GV's OD's 1 in my 49 GMC and 1 in my 70 GMC, I power them both directly from the battery (acts as a huge capacitor) with a power delay relay for triggering them. That solves 2 known glitches with these things, RFI and low voltage. Both are working flawlessly. |
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#3 |
Registered User
Join Date: Jun 2018
Location: Los Angeles, CA
Posts: 27
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Re: New Gear Vendors Controller Wiring
I finally installed the new unit last night, but I have not had a chance to drive it yet. Of course it’s a completely different wiring harness, so I had to do some surgery to replace it. GV originally suggested I do exactly what you have done, but I really do like the automatic features the controller offers. Apparently enough folks complained, so they partnered up with MSD. When I spoke to GV, the issues they had reported to them were very centric to people who run MSD ignition boxes. Obviously not surprising because of the frequencies it generates, but that’s typically easy to filter out in modern electronics. I don’t think GV has changed their controller in 30 years.
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#4 |
Registered User
Join Date: Mar 2007
Location: Kelowna, BC, Canada
Posts: 3
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Re: New Gear Vendors Controller Wiring
Hi, just wondering where you ran the power for the box to on your fuse box, mine says to run it to a fuse that is on during auxiliary but off during crank.
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#5 | |
Registered User
Join Date: Jun 2018
Location: Los Angeles, CA
Posts: 27
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Re: New Gear Vendors Controller Wiring
Quote:
I actually have an aux fuse panel that's only hot in the ON position for accessories that I added some time back. So I just used one of those circuits. My aux panel is on during cranking as well though, so I don't think it makes any difference personally. Been working great for while now; for however long ago I posted this. You could probably just add an inline fuse from the ignition ON power. |
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#6 | |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: New Gear Vendors Controller Wiring
Quote:
__________________
1972/Sierra Grande k2500 / 383 / th350 with Gear Vendors / 4.11 / 4" lift with 35s / Eaton Rear Axle |
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#7 |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: New Gear Vendors Controller Wiring
I took a electric probe and tested the fuse with the key off and the in ACC and then in start. It ended up being the "IGN" fuse location on my fuse box. If you read below on one of the comments there is a guy that hooked is up directly to the battery with a delayed fuse. If I can get him to explain to me how he wired it up I will rewire mine. Not that there is anything wrong with where it is at now, I would just much rather have the power strait from the batter if I could. Hope this helps!
__________________
1972/Sierra Grande k2500 / 383 / th350 with Gear Vendors / 4.11 / 4" lift with 35s / Eaton Rear Axle |
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#8 | |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: New Gear Vendors Controller Wiring
Quote:
__________________
1972/Sierra Grande k2500 / 383 / th350 with Gear Vendors / 4.11 / 4" lift with 35s / Eaton Rear Axle |
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#9 | |
Senior Member
![]() ![]() Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,815
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Re: New Gear Vendors Controller Wiring
Quote:
__________________
other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
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#10 | |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,517
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Re: New Gear Vendors Controller Wiring
Quote:
The delay relay is a Hella Brand. Here's the wiring diagram also for it. Your main power feed to the controller should be a fused 12ga wire directly from the battery going to connection 30. The 12 volt power feed to the controller will then come from connection 87...(87A is not used in this application). Your keyed 12 volt from the ignition switch goes to connection 15 Connection 31 goes to a good ground The timer on the relay is adjustable, mine are set at approx. 45 seconds after starting the vehicle the GV controller then powers up. Hope I was of help. |
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#11 | |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: New Gear Vendors Controller Wiring
Quote:
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__________________
1972/Sierra Grande k2500 / 383 / th350 with Gear Vendors / 4.11 / 4" lift with 35s / Eaton Rear Axle |
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#12 | |
Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,517
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Re: New Gear Vendors Controller Wiring
Quote:
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Tags |
2790gv, gear vendors, msd, overdrive |
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