Wiring a trunk mounted battery

wyteelx

Founding Member
Apr 17, 2000
285
0
16
Ohio
i found a good place to ground it. but whats the best route for the + cable? can i go through the car or do i have to run it under? been trying to find a good path underneath but i cant seem to find a spot thats not by something, suspension, exhaust ... also its been apart for so long i want to make sure i get all the other wiring right for the starter and relay. cant read wiring diagrams well, any one take a good pic for my memory? please. benn busy building for almost 3 years now almost done. help! - j -
 
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TokyoJoe

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Mar 25, 2007
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3
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Mine is routed under the car along the sub frame connectors and into the driver wheel side wheel well through the inside fender to the solenoid.
 

Fett

New Member
Nov 2, 2004
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Mine is routed under the car along the sub frame connectors and into the driver wheel side wheel well through the inside fender to the solenoid.
Same here, I ran the cable under the rear seat and drilled a hole on the rear, drivers, floor board just on the inside of the subframe connector, ran it along the inside of the connector, up the inner fender, to the solenoid.
 

impulse001

New Member
Jan 16, 2008
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New Jersey
Just curious, what advantage do you get by having the battery in the rear? Also, wont having such a long + cable affect the power/performance of the battery?
 

dresmnkaos

New Member
Jan 28, 2004
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most people do it for looks. some do it to take weight from the font of their car and shift it to the rear. kinda a win-win situation, IMO.
 

Fett

New Member
Nov 2, 2004
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I did it to clean up the engine bay. I am about to wire up my fan to work on two speeds, one for cooling one for AC. With the need for a 3 relay holder, and getting my MSD in a better spot, I moved my battery. Plus the weight transfer is an added bonus.
 

wyteelx

Founding Member
Apr 17, 2000
285
0
16
Ohio
decided to go inside most of the way then pop it out under driver side. any one got a pic or detailed instructions for the other part of my q (starter relay and starter wiring)? have a good idea but would like to make sure. almost there! i will probably need more wiring help soon. thats really my weak point. fused, fused and switched, constant... like i said i have a good idea but i will need guided through im sure! thanks again - j -
 

wyteelx

Founding Member
Apr 17, 2000
285
0
16
Ohio
bump. come on guys i've got some serious memory loss going on. got the cable ran now i need to get juice, also where is a good place to get power for gauges? i want the gauge lights to come on with the parking lights(volt & water temp). the other gauge (A/F) needs a fused and switched power source? any suggestions? i heard it would it be better to wire it for its own o2 sensor, true? :shrug: thanks alot - j -
 

dresmnkaos

New Member
Jan 28, 2004
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when i had my A/F guage, i drilled a hole and welded a bung for the gauge's o2 sensor.

get ahold of a wiring diagram and figure out witch wire coming out of the light switch you can tap into to get you the power you need when the park lights are on. IIRC, its a white/black striped wire is the one your looking for. dont quote me its been 3 years since i did that.

i got my power for my gauges from the fuse box. so all my fuses were right there not scattered across the car.
 

88stangmangt

New Member
Nov 25, 2003
2,330
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0
Stafford,VA
www.geocities.com
i got less than a volt drop from my battery in the trunk to the solenoid...my guages are all wired on a fused junction strip activated by the key switch. easy to wire them up that way. can get it at radio shack.
 

03-s281

New Member
Jan 20, 2004
421
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0
Stangville,TN
Mine is run under the car and alone the frame rail and sub frames. I also have a big fuse on mine incase of anything. 3G alternator, Optima battery and Msd componets also. I never have any charging problems.:D

100_3687.jpg
 
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