In order to wire a car relay, an individual can usually follow the wiring schematic that is molded into the side. Find out how to get power to flow from pin 30 to pin 87 with help from an auto mechanic in this free video on car repairs and mechanics. Expert: JB Hebert Contact: www.wrxtra.com Bio: JB Hebert is a machinist, metal fabricator, and auto mechanic who has been fixing and modifying all things mechanical for over 20 years. Filmmaker: David Pakman
Auto Repair & Mechanics : How to Wire a Relay
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#1 by strutter169 on February 4, 2010 - 12:05 pm
this isnt real descriptive,&3real,u need 2wire a relay cause if you just jump 2 acc 1st is your overloading the existing relay from the unit(relays are30/40 amps usually)&2 the factory has those 2 wires independent for a reason, youneed 2duplicate whatthe factory does for safety,use ground when running output from remote start (if not used for a securitybypass) to pin 85, pin 86 to your 1st accessory out from remote start, pin30 to 12vconstant(thru a fuse)&pin 87 to your 2nd acc wire in the car
#2 by th3realjonv on February 4, 2010 - 12:15 pm
I’m about to install a remote car starter; but the car has 2 accessory wires and only 1 of the unit’s 14 connections is for accessory. Can I just split the wire and fuse to each accessory, or do I need to install a relay? If so, why? Thank you
#3 by th3realjonv on February 4, 2010 - 12:34 pm
I’m about to install a remote car starter; but the car has 2 accessory wires and only 1 of the unit’s 14 connections is for accessory. Can I just split the wire and fuse to each accessory, or do I need to install a relay? If so, why? Thank you!
#4 by deef3 on February 4, 2010 - 12:43 pm
That helped a lot. Thank you!
#5 by noahjm10 on February 4, 2010 - 12:50 pm
86 should be the trigger (source) & 85 ground. But it will work in reverse as long as the relay body is not the older steel grounded ones.
#6 by nhelal56 on February 4, 2010 - 1:09 pm
Are you sure about pin 85 and 86? what if these reversed?
#7 by BlownInterceptor on February 4, 2010 - 1:18 pm
Great info, Thanks a lot!
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Have A Good one!