in answer to the question if you put power on 86 then you will have a short
as 86 is the ground for the relay also, mount the relay and then check the
resistance of 86 to the chassis. if it is the ground for the relay it should
read 0 ohms or close to it so if you hook up the hot wire to it you will
positively short out the hot as in sparks and the smoke will get out of the
wire.
Leo
-----Original Message-----
From: William M. Gilroy <wmgilroy@lucent.com>
To: spridgets <spridgets@autox.team.net>
Date: Thursday, September 16, 1999 9:28 PM
Subject: Relay question
>
>I have a rather stupid question about relays and I am sure someone
>on the list can help. Here goes. I have a 30 amp relay that
>has the following markings on the terminals: 30, 85, 86, 87, 87A.
>My understanding of the terminals is this:
>
>30 = power into the relay
>85 = power that cause the relay to switch
>86 = ground for 85 and relay
>87a = power when the relay is inactive
>87 = power when the relay is active (when there is power on 85)
>
>My question is have I correcttly labeled 85 and 86? Does it matter
>if I reverse the power and ground on 85 and 86? Would that affect
>how the relay function. I would like to get this right the first
>time, that way my fuel pump will work.
>
>As for the fuel pump I went with a 3-5 PSI NAPA pump (it was
>made by Carter). I mounted it on the vertical hump that is in
>front of the rear axle. I was having trouble getting the pump,
>a fuel filter (the pump recommends a filter before the pump to
>prevent failure), and rubber hoses to fit in that tiny space
>neatly. What I finally found was a 90 degree street elbow that I
>screwed into the top of the pump. I then screwed a fuel filter
>into that street elbow. I then used rubber hoses on one end of
>the pump and on one end of the fuel filter. It fit together
>real nicely. I then ran the power to the pump thorough one of
>those black split PVC wiring looms. That should prevent a short
>caused by chaffing. All in all I am pleased with how the job
>turned out. All I have left is to hook up the relay and away I
>go.
>
>Bill Gilroy
>77 Midget
>90 Shar-Pei
>
|