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Do I need the diodes for 2010 Ford F-150?

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I am looking at Guide #84031.

I was going over the instructions for the stand alone install of the EVO-ALL for my truck and I noticed that they call for 2x 1 amp diodes. Do I really need these? What are their purpose? Is there a part number that you can offer me so that I get the correct ones?

Also, I was looking over the relay wiring part of the instructions and it doesn't look correct. It shows the battery (+) being connected to the supply and one side of the trigger and the other side of the trigger goes to the EVO-ALL labeled "(+)Parking Lights". Both sides of the trigger shouldn't be (+). It wouldn't activate the relay. Unless the EVO-ALL actually supplies ground to that connection. Clearification would be appreciated. Thanks.

asked Sep 14, 2019 in Ford by cpdavis120280 (130 points)

2 Answers

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The Brown/White is a negative Parking Light output, we will bring correction to the guide since it's labled as (+). The Diodes on Accessory and Ignition are mondatory to prevent feedback from the vehicle.
answered Sep 16, 2019 by Am La (990 points)
0 votes
If you do not put the diodes, turning the key to accessory will then also turn on both accessory and ignition. Your car would have no more dedicated accessory only position.
answered Sep 16, 2019 by Robb (262,210 points)