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1977 Ford F-150 Starter Relay wiring

Tiny
SCIGUY
  • MEMBER
  • 1977 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 359,000 MILES
I need a diagram or help on how to install a starter relay. I have one and I need to know what wires go to what
Saturday, February 28th, 2009 AT 3:20 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The starter relay does it have two small terminals label S and I or just an S terminal?
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Saturday, February 28th, 2009 AT 3:38 PM
Tiny
SCIGUY
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  • 2 POSTS
There are 7 wires and 4 terminals. 1 terminal labeled S and 1 labeled I. There are only 2 cords that would fit on those two. One of the cords is black and one is red.() Now the other 5 wire are as follows: one from the starter to the solenoid; one from the solenoid to the positive battery post; these two are thick cables. The other three are small wires: two say "Fusible Link" and the last one is blank. I hope thats enough information. I need to know where all of them go if you can.
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Sunday, March 1st, 2009 AT 12:42 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do not connect the black and red wire -Hold ignition switch to start position the wire that has the power goes to the S terminal and the other for the ignition bypass circuit to apply full battery voltage to the coil.

The other three are small wires: two say "Fusible Link" and the last one is blank-This one here all goes to the battery side of the relay
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Sunday, March 1st, 2009 AT 1:41 PM

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