 Fuse box relays, Help ID them 72 late model |
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| jsaum |
 Oct 9 2014, 10:24 AM
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#1
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Senior Member  Group: Members Posts: 530 Joined: 12-June 07 From: Everett, WA Member No.: 7,809 Region Association: None  |
Please help ID the relays positions. I'm almost done chasing down all of the non working electrical issues the only two I have left are the fresh air blower and the trunk light. So far I have gotten all of the dash lights working, fog lights and the heater blower. I have checked the universal relays and they're all working good now. I haven't checked the silver square one is it the turn signal / hazard relay? if so it's good.
Thanks, Jsaum Attached thumbnail(s) 
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| JeffBowlsby |
Oct 9 2014, 11:52 AM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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The silver cube is the high beam/low beam headlight relay.
Check your wiring diagram and compare the wire colors to the relay bases to verify which is which. Its the only sure way. |
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| etcmss |
Oct 9 2014, 12:47 PM
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#3
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etcmss Group: Members Posts: 183 Joined: 20-April 06 From: Lancaster, Ky Member No.: 5,899 Region Association: Upper MidWest |
link to fuse panel relay picture. from Jeff's site.
http://bowlsby.net/914/Classic/zTN_Elect_R...inFusepanel.jpg 3 is turn signal 4 is horn |
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| jsaum |
Oct 9 2014, 12:52 PM
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#4
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Senior Member Group: Members Posts: 530 Joined: 12-June 07 From: Everett, WA Member No.: 7,809 Region Association: None |
Ok so relay #3 has the black and red wire it should be the fresh air blower relay. If I understand the wiring diagram correctly this wire should supply power to the relay on pin #87. Since the control levers are switching the negative contacts how is the relay engaged? I'll start a new thread on this, chasing down the rest of the circuit.
Thanks, Jsaum |
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| Dave_Darling |
Oct 9 2014, 11:27 PM
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#5
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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IIRC, that relay always has a ground. The other side of the coil is powered by "switched power" from the ignition switch, so the output of the relay (87) is always hot when the key is on. This power is used for a number of different systems on the car, not just the fresh air blower.
--DD |
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