what is the input/output plug on holley ls1 harness?
Thread Starter
TECH Apprentice
Joined: Feb 2008
Posts: 315
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From: IOWA
what is the input/output plug on holley ls1 harness? I feel like such a noob here. lol I read the wiring instructions. Maybe I just missed it. Does anyone know what you plug into the inputs/outputs plug on the holley ls1 harness? There was no plug for it and I got an accessory harness. That plugs into the dominator though.
I feel like such a noob here. lol I read the wiring instructions. Maybe I just missed it. Does anyone know what you plug into the inputs/outputs plug on the holley ls1 harness? There was no plug for it and I got an accessory harness. That plugs into the dominator though.
Thread Starter
TECH Apprentice
Joined: Feb 2008
Posts: 315
Likes: 0
From: IOWA
I do understand about the inputs and out puts. My confusion is there is no other harness to plug into it. I dont see one listed. The accessory harness I bought. Plugs into the dominator. I would have got one instead to plug into the one in the main harness but I got the one holley told me to get. Thats my confusion. Lol
Maybe.. 
I do understand about the inputs and out puts. My confusion is there is no other harness to plug into it. I dont see one listed. The accessory harness I bought. Plugs into the dominator. I would have got one instead to plug into the one in the main harness but I got the one holley told me to get. Thats my confusion. Lol
https://www.holley.com/products/fuel.../parts/558-400
The HP and the Dominator main harness is the same. Get the 558-400 harness and it will plug into the I/O plug on your main harness. Then run it to whatever you want...
Andrew
