powering 2 accessories with 1 wire

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clapclapngo

Member - Posts: 7

Joined: January 03, 2010

Location: New York, United States

Posted: January 05, 2010 at 10:07 AM / IP Logged

I want to install a Scytek Precision 2200-2W-1 FM remote starter in a 1989 Acura Legend.The 6-pin starter harness has 1 accessory output(+)to connect to the heater/air-conditioner. I believe the car has separate wires for blower motor and ac compressor and would like to know if and how I can add a relay to power the two. A diagram would be worth a thousand thanks.

yimke

Copper - Posts: 417

Joined: June 23, 2009

Location: Nebraska, United States

Posted: January 05, 2010 at 11:41 AM / IP Logged

Here is your relay wiring

85- (-) accessory output of R/S (Most units have it and it is a small GA wire)

86- 12 volts fused constant

87- 12 volts fused constant (can be same source as above)

30- Output to wire needed to power up

clapclapngo

Member - Posts: 7

Joined: January 03, 2010

Location: New York, United States

Posted: January 05, 2010 at 2:04 PM / IP Logged

What I'd really like to know is if the instructions say to connect Pin4 of the 6-Pin starter harness, orange wire: Accessory Output(+) to the accessory wire coming from the ignition switch that supplies power to the heater/air-conditioner, and my car has multiple/separate wires for heat and a-c,what do i do? Can a relay be used to power both with that one acc. output(+) wire?

t&t tech

Platinum - Posts: 2,608

Joined: October 05, 2008

Location: Trinidad and Tobago

Posted: January 05, 2010 at 5:47 PM / IP Logged

Yes relays can be used to power both wires of the one feed! But you only need one relay which you can wire like stated above or like this,

Pin 87- constant fused twelve at say twenty amps

Pin 86- to the First accesory that is powerd with the original feed from the r/s

Pin 85- ground

Pin 30- Second accesory wire in vehicle

Only disadvantage of this setup is that the relay becomes energized while starting with the key as well, If you would like to prevent this simply swap the ground on the relay and connect it to the GWR wire of the starter, if it's getting confusing, ignore all this and wire it like i said above and forget you read this! Good luck!

commit your way to jehovah and he will act in your behalf. psalms 37:5

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powering 2 accessories with 1 wire

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