Custom Camper factory solenoid? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PushnFords · 01-22-2014, 03:23 AM

I just bought a '72 C20 Custom Camper with the 400/402. On the driver's side inner fender right by the P/S reservoir is a Ford style starter solenoid. One wire goes across the radiator support to the battery, one is coiled around the solenoid, and one goes to a little metal relay screwed to the rad support at driver's left lower corner of the radiator. I don't want to rip that stuff out & toss it if it might be factory.....

JimKshortstep4x4 · 01-22-2014, 11:30 AM

I believe that your truck may have(or had) the dual battery setup and someone installed the solenoid. Here is a schematic of the dual battery wiring and components so you can compare what the factory did against what you have.

Jim

CCCC · 01-24-2014, 01:37 AM

Ditto what JimK says - installed such a setup on a 72 C30 Mohome here.

PushnFords · 01-26-2014, 03:37 AM

That diagram mostly matches up. I have the passenger side junction block still but don't see the driver's side one anywhere. Also missing the battery tray itself but there are a couple of bolts in the radiator support where it might have attached.

Wife is mad that I bought this truck...well actually the '72 C20 that I traded for this truck. My favorite year and I'd never owned one...at this point I'm just hoping to break even. But at least I can say I've owned two '72s. lol

JimKshortstep4x4 · 01-26-2014, 12:13 PM

The relay looks like the original relay and the two bolts shown in your picture are the the ones used for the right side of the battery box. Someone has obviously installed the starter solenoid.

Jim

PushnFords · 01-26-2014, 02:39 PM

Oh I thought the diagram was showing the starter relay at the lower corner of the aux battery.

01-22-2014, 03:23 AM	#1
PushnFords Registered User Join Date: Dec 2006 Location: Clay Center, Kansas Posts: 76	Custom Camper factory solenoid? I just bought a '72 C20 Custom Camper with the 400/402. On the driver's side inner fender right by the P/S reservoir is a Ford style starter solenoid. One wire goes across the radiator support to the battery, one is coiled around the solenoid, and one goes to a little metal relay screwed to the rad support at driver's left lower corner of the radiator. I don't want to rip that stuff out & toss it if it might be factory..... __________________ 1999 Tahoe LT 4dr 1971 Torino 4dr 1954 GMC 100 5 window - Project

01-22-2014, 11:30 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Custom Camper factory solenoid? I believe that your truck may have(or had) the dual battery setup and someone installed the solenoid. Here is a schematic of the dual battery wiring and components so you can compare what the factory did against what you have. Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC Last edited by JimKshortstep4x4; 01-22-2014 at 11:31 AM. Reason: wording

01-24-2014, 01:37 AM	#3
CCCC Registered User Join Date: Mar 2007 Location: San Pedro River, SE Arizona Posts: 734	Re: Custom Camper factory solenoid? Ditto what JimK says - installed such a setup on a 72 C30 Mohome here. __________________ CCCC 67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison Moved but still in the family 70 C20 Custom Camper 350/TH350; 72 K5 Blazer CST Highlander 350/TH350 Recently sent to new homes 72 C30 MoHome 402 4sp; 72 K5 Blazer Conv 350 4sp; 75 GMC 6000 Aerial 350 w Allison; 72 GMC 3500 Utility 350 4sp; 70 GMC 3500, 350 4sp

01-26-2014, 03:37 AM	#4
PushnFords Registered User Join Date: Dec 2006 Location: Clay Center, Kansas Posts: 76	Re: Custom Camper factory solenoid? That diagram mostly matches up. I have the passenger side junction block still but don't see the driver's side one anywhere. Also missing the battery tray itself but there are a couple of bolts in the radiator support where it might have attached. Wife is mad that I bought this truck...well actually the '72 C20 that I traded for this truck. My favorite year and I'd never owned one...at this point I'm just hoping to break even. But at least I can say I've owned two '72s. lol __________________ 1999 Tahoe LT 4dr 1971 Torino 4dr 1954 GMC 100 5 window - Project

01-26-2014, 12:13 PM	#5
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Custom Camper factory solenoid? The relay looks like the original relay and the two bolts shown in your picture are the the ones used for the right side of the battery box. Someone has obviously installed the starter solenoid. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

01-26-2014, 02:39 PM	#6
PushnFords Registered User Join Date: Dec 2006 Location: Clay Center, Kansas Posts: 76	Re: Custom Camper factory solenoid? Oh I thought the diagram was showing the starter relay at the lower corner of the aux battery. __________________ 1999 Tahoe LT 4dr 1971 Torino 4dr 1954 GMC 100 5 window - Project

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